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Boat engine piston hitting spark plugs

WebHigher-cost platinum-tipped spark plugs may not need to be replaced as often. At the same time, it might be appropriate to replace your oxygen sensor, spark plug wires, PCV … WebJan 10, 2024 · Hi all. Bought a project boat and while trying to get the motor started, I pulled plugs and found the gap completely closed. Regapped, and cranked again, gap closed again. I can see a mark on the piston where it is hitting the plug. The motor is a …

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WebApr 30, 2015 · 16. Apr 29, 2015 / Piston Hitting Spark Plug. #1. I have a 2000 John Deere 425 that I just purchased with a Kawasaki liquid cooled 20HP FD620D engine and I pulled the plugs to check them and the plug on cylinder 2 was smashed down and a indent on the piston. Cylinder 1 piston has slight contact with piston. WebHigher-cost platinum-tipped spark plugs may not need to be replaced as often. At the same time, it might be appropriate to replace your oxygen sensor, spark plug wires, PCV … headache and numb legs https://simobike.com

4.6 piston hits spark plug on cylinder 1 and 6??? - Ford Truck ...

WebDec 23, 2024 · Replacing Your Marine Spark Plugs in 11 Easy Steps 1. Disconnect the negative terminal from the battery. 2. Carefully remove the spark plug boots. 3. Place … WebMay 1, 2024 · Joined Sep 2, 2013. 225 Posts. Discussion Starter · #1 · Apr 29, 2024. So I decided to change my spark plugs because I noticed my gas mileage dropping off a little bit. Jeep still ran fine but I noticed the number 6 spark plug was bent pretty bad on the tip. The crazy thing is I never had a check engine light or any driveability problems. WebMay 3, 2005 · 2,866. 14. Jun 30, 2003. Colorado Springs, Colorado. If your plugs are white and have pieces of metal on them, it is because you're running too hot (lean). Parts of your pistons or head are being melted or breaking off, and they're accumulating on the spark plug. If your plugs aren't white but they have pieces of metal that have been dug into ... goldfinch close loughborough

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Boat engine piston hitting spark plugs

What Causes Spark Plug Electrode To Bend (List of Reasons) - The …

WebOct 7, 2024 · Please Note. MarineEngine.com does not offer troubleshooting assistance or repair advice by email or by telephone. You are invited to join our public Boat Repair … Web(main jet), or too hot of a spark plug range. 9-MULTI-POINT SEIZURE This piston has many vertical seizure marks around the circumference. This cylinder was bored to a diameter that was too small for the piston. As …

Boat engine piston hitting spark plugs

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WebAug 31, 2007 · 9. Dec 9, 2004. Oak Harbor, Washington. Pull off the head and tell us what you see. Something similar to that happened to me. It turned out the mechanical timing was off and my #3 valves decided to tap dance on my piston and the valve studs ended up punching through my head and my piston cracked in three places. WebJul 29, 2010 · atle. Premium Member. Joined Dec 13, 2009. 972 Posts. Discussion Starter · #1 · Jul 28, 2010. hey guys, when my engine was a 427 0.030, i was using the AC R44XLS plugs. the engine has now been turned into a 454 0.060. will these plugs still work? and is there a heat range index somewhere for reference?

WebApr 11, 2024 · This works surprisingly well, particularly with engines stuck from years of sitting out in the rain, where water has rusted the piston rings to the cylinder. Everybody has their favorite penetrating oil, but I like P’Blaster. Start by shooting oil down into the cylinder through the spark plug hole, and don’t be shy – use a lot of the stuff. WebSep 6, 2014 · Marine Engine Maintenance; ... mercruiser 3.0l piston hitting spark plug? Thread starter virmagicus; Start date Sep 4, 2014; V. virmagicus Cadet. Joined Sep 4, 2014 Messages 6. ... and put the right spark plugs in! You probably have the long reach spark plugs in there by mistake! Are you sure they're not the AC-MR43TS long reach? Last …

WebOct 26, 2008 · Discussion Starter · #1 · Oct 25, 2008. Started up my 383 stroker for the first time today but ran into a problem, it really didn’t want to run very well. Come to find out the piston (domed) was hitting the spark plug (correct plug per RHS head spec) closing the gap of the plug. At first we thought the plug came new with a gap really close ... WebFeb 23, 2024 · Registered. Joined Oct 10, 2016. 1 Posts. Discussion Starter · #1 · Feb 8, 2024. My spark plugs are kissing the top of the piston dome. I have a TF A460 head with pistons that were supposedly designed for that chamber. The plugs are hitting just to the point of pushing the ground strap to the center electrode. I had Autolite 3923 plugs …

WebJul 22, 2006 · Joined Mar 25, 2003. 2,827 Posts. #4 · Jul 21, 2006. It's fine, so long as you don't have a cracked piston. The piston hitting the plug has also put extended stress/wear on the rod bearing for that cylinder. If it's been a prolonged thing, it could have weakened it … goldfinch close horshamWebOct 31, 2013 · Boat Engine Parts Outboard Motor Parts ... 25 hp 74 evinrude spark plugs. Thread starter doglover; Start date Oct 30, 2013; D. doglover ... with NGK B7S-----BOSCH W5EC-----AUTOLITE 353-----You certainly need the correct length thread or the piston will hit.-----If there was internal bearing damage the piston may also hit the plug. Reply. D ... headache and numbness in legsWebSep 4, 2010 · Piston to spark plug contact generally would give you an indication of to close of tolerance, BUT, too long of a reach on the plug would also. Just a light touch on … goldfinch cloud solutions