Instead of only moving up and down in the cylinder, the piston has enough room for a slight side-to-side motion as well. Piston Slap: Sound, Causes, and Possible Fixes. Sajeev, my ’99 Accord (2. I've used Mobile 5w-30w and did not hear any slap. 0s has similar slapping sound, it's just how loud is it. Bonus! A Piston Slap Nugget of Wisdom: There are worse things in life than being a car abuser. If it gets worse under load it might not be the classic piston slap. 93455. Thread starter tvlunn; Start date Jun 2, 2019; Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. So leaning over the engine bay blipping the throttle lightly in neutral from idle to say 1800rpm or so. I'm not sure it's piston slap, the mod motors just seem to make a lot of knocking noises when really cold, no matter how many miles on them. 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. If it goes away once warmed up, then you should be fine. 5) Red Line Break-In Oil. 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. It's really quite embarrassing and attracts alot of unwanted attention. Check out the camshaft position sensor. As you can see the piston grows almost twice as much as the cylinder. Due to the 0. Learn how you can fix that & why this happensI have a 2012 Ford F150 5. Step Two: If you see corrosion, cracks, or broken welds on your manifolds, replace them with new ones. It then goes away in like 3 minutes of just idling. • 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. Instructions: How to Fix Piston Slap. It disappears after a a few miles when the engine warms up. A Piston Slap Nugget of Wisdom: Engine leaks after switching to synthetic oil is also a problem on newer classics. They. Gallery: 1 images. Only makes noise first start of day after sitting all night. 9L / 300 - piston slap??? - hey my 95 f-150 makes a werid repetitive noise while accelerating. We have a 2020 Expedition with 8k miles. I have a license for both, but haven't invested in an SCT update so I can't look inside my new factory calibration. 3. Engine started right up on the second pull but after idling for about a minute it started sounding like something was bouncing around in the motor. HOME; FORUMS. " When I asked what causes the noise, he specifically stated that it was "piston slap" and that "occurs with all 'high-performance' engines. A “Nu” flame has come, and nothing she can do can do me wrong. . This noise can be quite alarming and may indicate a problem with the engine. Site Announcements; New Member Introductions; Ride Of The Week; User Gallery & Picture Display; Newer Light Duty Trucks. 2 and 2. Piston Slap - Ford Modifications Website. 2021+ Bronco; 2021+ Bronco Sport; 1978 - 1996 Big Bronco; 1966 - 1977 Early Broncos; Bronco II; Ford Vans and other vehicles. I feel like it may be piston slap or just normal noise from these triton engines, so far every expedition i've seen/heard running of similar years makes a similar noise. The usual cause of this problem is cracking in the lower piston skirt. It doesn't go away completely. O. Instructions: How to Fix Piston Slap. Piston slap is a light tapping noise that is more prevalent when the engine is cold, while rod knock is a heavier, metallic sound that gets worse as the engine warms up. Piston Slap IS the Piston Skirt tapping against the Cylinder. Only apply the brake and wait at traffic Light for example. The alpha for iron is . Your reseach is valid, you have very little to worry about. This issue usually occurs before the first service, however, it has been reported. After I put the pan back on, and it still made the noise I laid under the car with the engine running and was able to determine it was coming form the torque converter/tranny area. If you look at a Ford F. 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. 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. The owner said the engine has the typical 460 piston slap but goes away once up to speed. 3L Quad 4 and the 2. 8 and 5. Piston slap noise concerns are a common issue faced by many vehicle owners. Most of the time it has to do with oblong cylinders (#3 and/or #4 being the most common). Piston slap is what happens when the piston and the cylinder wall no longer have the tight tolerances of a new engine and the piston “rocks” side to side on a slight angle inside. So most unlikely it would be piston slap, more likely to be cam/lifter/rocker issue and a a sticky lifter is first place to start. The noise would come and go but mostly it. Step 2: Start the engine and allow it to idle. A loose piston will slow or stop the slap as the pistons expand in their bores. well. Sometimes when the truck has been sitting for a while, it will continue to knock for a few seconds after initial acceleration. Rod knocks sound and piston slap sound aren’t alike. When the engine gets hot, it causes the piston to expand, and this reduces the sound resulting from the piston slap. The engine will run and the wrist pin knocks. Out of pandemic boredom I've been watching a lot of YouTube videos on engine teardowns. 8l) - Piston Slap? - I bought my V-10 6 months ago and over this winter have noticed a phenomenom which occurs only after an initial startup in the morning. 0, 93 Festiva, 92 Sable, 86 Mustang, 82 Mustang 1967 - 1972 F-100 & Larger F-Series Trucks - Piston slap? - so started the truck this morning and could hear a funny ticking noise. The separation and identification technology of noise sources is the focus and hot spot in the field of internal combustion engine noise research. . 0, 93 Festiva, 92 Sable, 86 Mustang, 82 MustangMu-een (from Cape Town, South Africa!) writes:Hi I would like to know what is the difference sound of a tappet noise, or bad rocker, or a piston slap. 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. I run the 820s filter with valvoline 5w-30 oil. Read FAQ. Timing belts don’t often snap, but when they do, it can cause piston damage, ruined cylinder heads, and engine valve. Sounds like lifters or piston slap. I just have never heard this sound after an oil change and it really has me worried. Usually it is only 1 to start and a good ear can tell which bank it it. I "heard" this is inherent issue on Honda 3. 4L) - knocking 5. 2002. HOME; FORUMS. It only occurs (or is noticeable) when it’s cold outside. The Method: About 10 bucks at the parts house and you put the tip of the probe on various spots on the engine until you figure out where it is coming from as close as possible. This sound is caused by the piston motion in the cylinder bore. Your reseach is valid, you have very little to worry about. The tone of a rod knock is often deeper, while a piston slap sounds worse. (2015 w V10) Was told they couldn't figure out what the noise was so they would look deeper in the engine. 4. It’s the only logical reason I’ve seen for this phenomena, as it does cover a variety of makes and models over the. Discussion starter · #1 · Feb 11, 2020. Controlling piston slap is a complex process. Notice the creepy sound of the defective piston ASIDE the normal tick sound. My initial feeling was that the source is a loose turbo plumbing somewhere between the air filter and the throttle body. The sound will be significantly less loud while the engine is hot because the piston will expand, but it will be louder when the engine is cold. If in fact you have piston slap and supercharged it's just a few Rev Limits away from the wrist pin area breaking away and launching the piston up down or side ways in the what will be left of the cylinder. 0000067” X 3. It could be a bent rod and the piston is making contact with the crank journal. The posts make me think this is unlikely, however, since I have a 2001 V-10 and the problem seems to have been limited to earlier years. Sometimes adding a thicker weight oil or a oil thickener something like STP can quiet the slap a little for a while but its only for a short while. It is caused by skirt wear and sometimes a bad or binding Wrist Pin. 2014+ Transit; Transit Connect;. After doing. 4. 6l and 5. The noise I had was 100% NOT piston slap. It's a repetitive sound and only occurs in that rpm band. Piston slap sounds a bit like taking a few roofing nails, putting them in a metal coffee can, then putting a lid on and shaking the can when the engine is dead cold. OldGoat38. 5w30 or 5w20. Number 7 & 8 cyls fire consecutivly. This is why the piston slap gets quieter when the engine is warm. #7 · Feb 28, 2013. If you can eliminate the exhaust leak for sure, best to get a mechanical stethoscope and zero in on exactly were the noise is coming from. However, I do want to be prepared to take action if/when judgement day comes and it loses. My average tank is about 19 miles to the gallon (in comparison that is what my twin turbo. The grease had worn off of them (Ford puts a few. NW writes:Hello there Sajeev, hope all is well with you. Cylinder diameter growth = . Compare your sound to this video for similarity in sound: 2004-2014 Ford F-150 4X4 Clicking Humming: Vacuum Hub Replacement. 2003 Ford F-150 SuperCrew King Ranch 4x4 Previous trucks: 02 F-150 SuperCrew XLT, 11 F-150 EcoBoost Lariat, 07 Ranger, 01 SuperCrew, 98 SuperCab 4x4 Other Fords owned: 00 Taurus, 96 T-Bird, 95 Escort GT, 93 Mustang 5. FORUMS; FORUM GUIDELINES; GALLERY; EVENTS. The noise goes away when the plug is disconnected because the firing stress is taken from it, making it work less. HOME; FORUMS. 2012 Ranger & B-Series; Escape & Escape Hybrid; Aerostar; Crossovers; Older, Classic & Antique Trucks. Likely fine. Most owners who reported this phenomenon are still on very low mileage. Piston slap is a light tapping noise that is more prevalent when the engine is cold, while rod knock is a heavier, metallic sound that gets worse as the engine warms up. But what Im concerned about is the piston slap noise at idle. He’ll be missed. I seem to have a little piston slap for about 30 seconds after a cold start up. The technician stated, "That the noise is normal and all GTs have them. Time for a 2nd opinion, but easy to check out yourself with a long screwdriver and place handle end on the bone around your. Getting it installed is another matter. Mainly startup in colder temps. 1392 posts · Joined 2013. 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. I recently got a CEL for evaporative emissions control. a broken skirt will certainly make noise, as squirrel said that’s a lot of metal in the oil. 4/6. According to the TSB, the noise may begin in the first 12,000 to 15,000 miles and lasts between 5-30 seconds. Hey everyone, In January I had the engine replaced on my 2009 Ford Escape 4 cyl. We own a 2004 Expedition Eddie Bauer 5. No sense in bringing the Piston Slap sound/issue to the dealer. V10 piston slap. 1st Gen - 1997 - 2002. The first issue that causes a rattling noise underneath your vehicle is a bad catalytic converter. 1947 and Older Ford Trucks; Bronco. 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. Likes: 0. 0L V6, Ford’s 4. 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. FORUMS; FORUM GUIDELINES; GALLERY; EVENTS. I bought the car Used at 30k Miles and drove it up to 70k miles when i started to hear this sound. I did a lot of research over the last week , and most conclude that the. If this is the case, then there could be cause for concerns as these engines. It has an intermediate knock that comes and goes but when its knocking its really loud. As we previously mentioned, several different things could cause your engine to make a knocking sound. My vehicle has been in the shop coming up on 3 months now. Location: Gold Coast QLD, Australia. The same for GM V8's. A compression test and/or leakdown test can be used to confirm the diagnosis. Lifter noise would be worse warm, piston slap would be worse cold and wouldn't be as steady. Searches tell me its. Do others have Gen 2 piston slap? Would you push back on Ford? Sponsored . #3. over the summer i switch over to Royal Purple, it ran great until winter/fall set in and then i got the slap. However, when the engine. Piston slap in the 4. 3042 Views 7 Replies 6 Participants Last post by house_chair, Dec 8, 2007. Thanks for doing what you do. 5 litre 4 cyl. 4L 2 valve. 4 with 160k mi. . But keep up with the maintenance, don’t thrash it and I predict. I have never owned a ford before, but I really love this new truck. This ^^ Is the right way to do it. Now, start and idle the engine for a few seconds. In most cases, the slapping sound will go away as the oil pressure builds up and the engine gets hot. Run a thicker oil, like mobil1 15w-50 and hope to cushion whatever is making that noise in there. We live on the north side of the city and own a six-month-old 2015 Ford Expedition EL that has been outside its whole life (it doesn’t fit in the garage). If the sound goes away as the car warms up, say about 5-20 minutes, it's piston slap. It will be a knocking or slapping sound coming from underneath the hood of your car. Odometer quit working at least 5 years ago. Common causes: Worn bearings; main, rod, or thrust. He’s found a full-time home with another outlet, and we wish him well. Also, the few people who have had their engines replaced under warranty have sited “cylinder scoring” as the issue, which could be caused by piston slap. I claim the Lifters out (Noise examples on youtube). 2nd Gen 1991-1996 1. Premium Explore Gaming. Motor supposedly has 45K original miles with only valve seals and a timing belt replaced. I had this knocking noise under cold acceleration since beginning of 2011 and it's gradually getting worse/more audible. Searches tell me its. I know a lot of engines have piston slap. Ed. Jan 2012. With the 5w-40, it only made the noise when truck was at or near peak operating temps, say 170* and up. And don't forget to replace the rings with new ones. 6/5. EVENTS; CRUISE GROUPS. You can use a specialized vehicle stethoscope to determine the exact placement of the sound. I'd been using valvoline maxlife blend since about 90k, but switched to rotella full synthetic at about 190k, and it doesn't seem to slap as much.