A few months ago, I began to hear a noise that sounds similar to a diesel engine, which begins a few seconds after starting the cold engine. This ‘slapping’ sound is different from the engine knock you hear as you accelerate the vehicle. The 03 was dead cold when it started and had no knocking on start up. Join. I have a 289 that had been sitting for 20+ years that I put in a friends Mustang. I noticed around 2k miles the engine sounded a little louder than normal. 6/5. If it’s the bearings, it will start out low and gradually get worse and worse as the bike ages. If it goes down, that would suggest it is piston slap. 99. When a combustion occurs in the cold engine the cold piston moves rapidly sideways as well as moving down the bore in a controlled way as you would expect. 9. Sounds just like forged piston slap. Then I opened up the oil filter and found some metal. I agree that its hard to diagnose. For the most part, it cured the piston slap. Piston Slap - Ford Modifications Website. This is because the aluminum pistons expand more than the steel cylinder liner - thus the piston to wall clearance becomes less. Once warmed up, or as soon as driving or revving, the noise goes away completely. Piston slap should become less as the engine warms up. Continuous piston slap means the engine needs service; however, if you only notice this sound when the engine is cold, it is likely not serious. Changed my oil with delo 15-40 like usual and filter, and now I have a HORRIBLE lifter tap sounding noise coming from the motor. Escort Generations/Motors. If it gets worse under load it might not be the classic piston slap. My vehicle has been in the shop coming up on 3 months now. If anything, it's worse. Changed my oil with delo 15-40 like usual and filter, and now I have a HORRIBLE lifter tap sounding noise coming from the motor. When this thing goes bad it makes quite a loud noise at. Years back when I repaired and drove two stroke single and twin cylinder Yamaha's, Suzuki's, etc, piston slap was common. The 302 has pressed in pins and usually wrist pin slap is more a problem for engines with full floating pins, it's caused by excess clearance between the pin and the bushing in the rod. # 1 10-27-2007, 04:03 PM RangerEdgeO2 Senior User Thread Starter Join Date: Mar 2007 Posts: 135 Likes: 0 Received 0 Likes on 0 Posts "Piston Slap" Sound? Sup Guys, I just. Piston slap is a thing of the past. So, for those of you who want to reduce piston slap, Ford has released a new software version for at least the 2016's that reduces it. Within a few seconds it goes away. My initial feeling was that the source is a loose turbo plumbing somewhere between the air filter and the throttle body. Gallery: 1 images. Only makes noise first start of day after sitting all night. EVENTS; CRUISE GROUPS. Piston slap is a sign that your engine is on its way out. 3) if you hear air escaping out of the throttle body, you have a valve problem. —SM ). A “Nu” flame has come, and nothing she can do can do me wrong. This sound is caused by the piston motion in the cylinder bore. It stops before wife backs out of the garage. • Noise levels at the locations shown on this map were calculated by assuming a “worst-case scenario” of 60 dBA everywhere along the property line. Feb 17, 2009. They found, to their surprise that the UOA results improved markedly. And with spring comes the promise of new automotive projects. Mike writes:Good morning Sajeev. . Again Ford or the dealership is lying the groundwork to try and get out of any warranty work that require a new engine. As it warms, the sound becomes a dull thud. 0s could also have an issue with cylinder wall sleeves walking but that would give more of a rattle with rpm while the oblong cylinder issue is a straight out knock at idle, gets quieter. The oil level is correct, 13 quarts and verified. Yes, but the experiments in the paper above showed that 20W50 improved one type of piston slap while made another one worse. Piston slap happens on colder days (less than 45 or so degrees), the colder it gets the more it sounds like a deisel, but as soon as the engine starts to warm up the slap goes away. Ride: 98 AU Fairmont S/W. All seasons also. Unfortunately I'm well-versed in bad engine noises. HOME; FORUMS. Canada. I have been reading posts and i think it is what is known as piston slap? What is causing this and how can it be fixed?What should I do with my rangers piston slap. The widening of the opening will imply that the oil will not be able to form a barrier, and this leads to a rod knock. If you hear any rattling noise from your engine while accelerating, that can be a piston slap. Piston slap occurs on a cold engine when clearance between the piston’s lower skirt and. Thats going to sound like piston slap, or maybe some lifter noise or worn journals. However, it's been about a month, now I have no warranty and I have noticed that at cold start after sitting overnight (at only about 0-7 degrees Celsius, maybe 40-42 degrees Fahrenheit) I always get a. I'm getting a audible piston slap sound. You can use a specialized vehicle stethoscope to determine the exact placement of the sound. NOT MY VIDEO BUT SAME NOISE! I've had a few 6. 5 litre 4 cyl. That said, I am confident this will work out for you. The noise is more noticeable when the weather is below 50 degrees. Generally, Piston slap noise is a dull knocking sound that will occur or increase when you increase revs and load the motor on the road. 4 disability, we should just get a full warranty for the 150,000 miles. 0L sounds like that but when fully warmed the engine quiets a lot. Searches tell me its. Let’s look at what causes the knock, and why it is much more common now than in the past. On the other hand, piston slaps are not as deep. Thanks for doing what you do. My most recent oil change I switched to Motorcraft 10w-30, thinking since that's what Ford uses from the factory, maybe it would stop the ticking. - I don't have a video of the noise, but my 99 f450 v10 5spd has some iffy noise coming from the front. " When I asked what causes the noise, he specifically stated that it was "piston slap" and that "occurs with all 'high-performance' engines. Yeah, my 2011 Ford Ranger makes that fuel injector clicking sound too. Theses engines from GM use a short skirt piston, when cold it will rock back and fourth in the bore until it expands to it's proper size. Searches tell me its. However, I do want to be prepared to take action if/when judgement day comes and it. 2. When I start it there is no unusual sound what ever the outside temp is. Searches tell me its. Searches tell me its. Learn about common Ford Mustang GT Coyote 5. TTAC Commentator Weltron writes:Hi Sajeev!The car I am writing about today is my winter beater, which is a 1999 Ford Escort SE sedan which says it has a tick over 155,000 miles. Some engines have proven otherwise (sludgy VWs and Toyotas, piston-slapping Chevys, head gasket eating Subies, etc) but one fact remains: advances in 1) metallurgy 2) technology 3) production means that the old ways of your pushrod motors (and my Windsor V8s, FWIW) are a thing of the past. This sound occurred before and after I replaced the ball joint (driver’s bottom) as I was told by a mechanic at Ford it needed to be replaced. Preventative Measures. Noise when the engine is idle. 6/5. It’s a hollow pin that holds the piston to the top of the connecting rod. Why does piston slap happen? Piston slap happens when there is too much clearance between the piston and the wall. So if you chose this path, do yourself a favor: buy a 4th Generation Camaro or Firebird and have a frickin’ blast. spark plug wiring diagram the factory routs the wires on those cyls criss cross over each other otherwise the cyls will induction fire and knock a piston pin bushing out of #7 cyl. A continued piston slap noise indicates that the engine needs service. 3L's rescue, The Piston's short skirt design. S. Step Two: If you see corrosion, cracks, or broken welds on your manifolds, replace them with new ones. Shaffer · #2 · Apr 10, 2004. It only occurs (or is noticeable) when it’s cold outside. 4) put in my '02 Screw and I have this tapping/knocking noise under light to moderate load. Other than that, motor runs great. Boxer engine pistons wear more at the bottom due to Gravity. 5 L Piston Slap. The advantage of this is that the piston is tighter in the bore when the engine is cold, which drastically reduces the noise factor. Ford Truck Enthusiasts Forums. S. S. Number 7 & 8 cyls fire consecutivly. Another variable is base oil (not studied here). Location. Does that sound go away at engine speeds above idle? Calvin:This doesn’t necessarily mean the pistons are worn, because some new engines will slap a bit when first started. 6-litre overhead-valve motors did tend to sound pretty harsh and noisy at times, but the only noise which was a cause for concern was piston slap. As mentioned above, the half-speed piston tapping noise occurred during the first warm-up on the new engine. This a brand new 1. Dec 13, 2008. If I shut the engine off and restart a few minutes later, the noise is back briefly—likely because one or more lifters are bleeding oil. 2500 to 3500 miles the engine develops what. 0l 2WD / 4WD 4WD Total Lift Ranger 5" (1. Last edited by Bro107; 10-10-2007 at 01:12 AM. E. You’ll also find them in many late model Japanese engines. - 1-2 quarts Lucas Oil stabilizer (preferably synthetic & enough to fill 25% of your engine oil capacity). Lately, I’ve got a vibration and weird sound coming from the driver’s side when stopped at a red light. EVENTS; CRUISE GROUPS. . Ok, first off I appreciate your help. Now with the 10w-30, it seems to only make the noise in the 130-170 range. I’ve asked the dealer how to get. The piston skirt is the lower part of the piston, which will develop cracks over time due to metal fatigue. User Name: Remember Me? Password: Forgot Password? Join Us! FRF Store: Register: Ranger Pictures: Community: Today's Posts: Search: Welcome to Ford Ranger Forum Thread Tools: Search this Thread #1 06-12-2012, 10:22 AM cjheck. IMO, Piston slap won't hurt anything. Most probably it is piston slap. I stumbled upon a YouTube video of a Ford engine that was making an identical sound to my Hyundai: 2011 Tundra 5. (nothing radical). A Piston Slap Nugget of Wisdom: Engine leaks after switching to synthetic oil is also a problem on newer classics. E. Unplug fuel injectors one by one. This ^^ Is the right way to do it. Trust me, the ones of us experiencing this problem have been through all the reasons. As a result, it was in great condition until its unfortunate encounter with the deer. Most start making this noise after the first oil change. Number 7 & 8 cyls fire consecutivly. We informed the dealership about it, but they gave us the run-around and did not fix the. Neglecting oil changes is the easiest way to get piston slap. I hear a piston slap sound immediately after start up. Sounds like: Dull, heavy, metallic knock under load. 9L SOHC. well. The local Ford dealer, when dealing with the modular truck engines and "piston slap" simply installed 10W-40 synthetic. 0, 93 Festiva, 92 Sable, 86 Mustang, 82 Mustang reach337 said: 18-19 GT's have piston slap issues. Not to mention the warranty claim often reimburses you for $700 diagnostic work you’re about to pay for. My '95 1. As you said in your thread gm vehicles are famous for this, and usually run the full life of their engines. I. Location. It has 88,000miles on - Answered by a verified Ford Mechanic. I have an issue with a 2010 Audi A4; my boyfriend bought this car from a dealership (used). V10 piston slap. I can't imagine a dealer (for any brand) doing an engine replacement on a non-recall car that's out of warranty at no charge to the customer. Getting it installed is another matter. I feel it could be the timing set since it's never been changed and at least 160k miles. Rod knock is usually when you rev the engine in neutral, it will knock when you blip the throttle at 3-4000rpm, and hold it steady or let off the throttle. Every time he hit the brakes, it would knock, and I was thinking it was the trans shifting. 113. Gallery: 1 images. NJ. The first issue that causes a rattling noise underneath your vehicle is a bad catalytic converter. 0 knock. Upon opening the hood I could hear it better and placing my hand on the driver side spark plug 2nd from the front I could feel it tapping. It's really quite embarrassing and attracts alot of unwanted attention. The. Piston Slap or cold start noise referred to by some is not really a serious problem. Anyway is anyone familiar with the infamous 4. Ford is calling "piston slap". This ^^ Is the right way to do it. I did some digging and Arrington Performance says that Mahle (the OEM for the pistons) used al anlloy per Chrysler specs that had high expansion rates and therefore requires higher piston to wall clearances when cold and therefore makes noise. If the sound goes away as the car warms up, say about 5-20 minutes, it's piston slap. So most unlikely it would be piston slap, more likely to be cam/lifter/rocker issue and a a. I got tired of chasing it in my wife's 02 Denali and we ended up putting 30k hard miles on it without any issues. If Ford truly had a table for the Gen 1 Coyote calibration to reduce piston slap or the audible noise of it. If one of the pulleys seems unusually hard, wobbles, or feels loose, most likely that's the source of your noise. 04ssti · #3 · Jan 9, 2012. Come join the discussion about performance, builds. I feel like the norm these days in anything sporty is to just make it as loud as possible with an obnoxious rumble and perpetual popping/crackling. At start up, especially in cold weather, the engine makes a loud knocking sound for about 30 seconds. This is a chevy posting that sounds like it came form here. If it is piston slap and doesn't go away in say 2 minutes or so, you chould probably get it checke. Piston Slap - Ford Modifications Website. One of the best ways to check for this is to swap the injectors from side to side. HOME; FORUMS. Use 5W20 synthetic oil and a Motorcraft oil filter so the oil pressure will build quicker on cool starts. I got it fired and now have a rhythmic knock on the #4 cylinder. - Full Synthetic 5w-20 motor oil (enough to fill at least 75% of your engine oil capacity). Now, using 5W-10W30 maybe will make it quieter. By Magnus Sellén Updated: March 29, 2023 If your vehicle is making a knocking or rattling sound, it might be a piston slap. B. V-10 Piston Slap. Here’s some videos of it in. It will rock slightly to one side, on the up stroke and then back to the other on the down stroke causing the. Feb 8, 2006. TTAC Commentator Weltron writes:Hi Sajeev!The car I am writing about today is my winter beater, which is a 1999 Ford Escort SE sedan which says it has a tick over 155,000 miles. 4L) - knocking 5. this is not a dry startup problem either. However, I do want to be prepared to take action if/when judgement day comes and it loses. 4 seems to have that "piston slap" sound more than it ever has at idle. EVENTS; CRUISE GROUPS. The latter is clearly not relevant on your timing belt–equipped Forester, so I am focusing on oil pressure right after you twist the key. 9L) - Piston Knock/Slap - I had a real bad knock in my 94 7.