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Q: Piston slap how long be for the motor blows?
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How do you fix valve slap?

Do you mean piston slap? Noise like piston slap are repairable only by an engine rebuild.


Why is there low oil pressure and a rapping noise inside the motor of my 1997 Yukon with 134 000 miles?

Engine internals worn Piston "slap" Rod "rap" Engine internals worn Piston "slap" Rod "rap"


Would piston slap affect the power on the motor?

A great big YES!!! The cylinders must be bored-out to the next size.


How do you change rod bearings on a 94 Bonneville V6?

If you have to ask,forget it, it`s cheaper to buy a used motor at a junk yard. Are you sure it`s not piston slap making the noise. I`ve had piston slap for the last 70,000 miles and still running strong.


How do you quiet piston slap?

The only way to fix piston slap is to replace them. Some oil additives will quiet them down some, there are several brands available.


Is there a recall on the 2000 5.3 engine due to piston slap?

no


What is a piston slap?

piston slap is when the piston inside the cylinder is somewhat smaller than the cylinder bore. when the piston moves up and down, it ends up moving side to side too. this causes a knocking/slapping sound as the piston slams into the cylinder walls.this can cause harm if the play between the piston and bore are significant, otherwise it's nothing to worry about. if the car is hammering you might want to take it to a garage.Piston slap is the piston lose is the cylinder and it is making a rattling noise.Hope this helps.


What causes valve noise on startup?

are you sure is a valve noise?? or is a piston slap?


Does the 2000 E 350 have any major problems especially related to pistons?

They do seem to have a tendency toward "piston slap" until the engine is warm. That's where the bottom skirt of the piston wears a little and becomes small enough to rock a couple thousandths of an inch at the bottom of the stroke. When the piston rocks quickly it makes a sound that is characteristic of piston slap. That's the bad news. The good news is, the engine can run several hundred thousand miles with piston slap and as long as it goes away when the engine warms up... no problem. It's more of an annoyance than anything. But If you insist, you can have the engine rebuilt, spend a lot of money and MAYBE it will all clear up.


Can a piston skirt slap noise be mis-diagnosed as a timing chain tensioner or cassette guide noise on a 1998 Ford Explorer anf if so what do you advise other than replace pistons?

Piston slap and timing chain related noises can be very similar. If it is a piston slap noise the noise may be louder during power braking and may quiet down as the engine warms up.


What would cause a tapping noise in a 1999 Buick Century 3.1 liter engine?

I ask the same question to GM and they told me that it is a cold motor piston slap and should go away once the motor is warmed up. The garage told me that it is normal and not to worry.


What would cause my 2002 silverado to knock when it is only cold?

piston slap. very common