Fear the worse, loud banging sound comingfrom the engine

[jasonmd13]

Re: Fear the worse, loud banging sound comingfrom the engine

I hope we figured out the problem. We installed the new lifter and it only soaked in oil for about an hour instead of all night. We tighten the rocker arm, then about 30 seconds it would start tapping again. So, we did this about 5 times. We think it was over tighten and it lift the lifter raised, and would not get any compression. Last night, on the reused head gasket, it had 125 psi compression with the rocker arm loose. Hopefully, the reason it wouldn't crank is the timing needed adjusting. I'm getting the heads redone and one valve changed and will update it soon.

 

[jasonmd13]

Re: Fear the worse, loud banging sound comingfrom the engine

​

I can't find my huge service manual, ( my wife cleaned up the books),



Where are the timing marks on my 1996 mercruiser 4.3 and what degrees should it be?

 

[Josh P]

Re: Fear the worse, loud banging sound comingfrom the engine

​

I can't find my huge service manual, ( my wife cleaned up the books),



Where are the timing marks on my 1996 mercruiser 4.3 and what degrees should it be?

timing marks are on front cover and on balancer behind crank pulley.. Book says 10*btdc..

 

[jasonmd13]

Re: Fear the worse, loud banging sound comingfrom the engine

Does anybody have a link on how to install new adjustable rocker arms. I need to know how to set the new rocker arms

 

[jtrasap]

Re: Fear the worse, loud banging sound comingfrom the engine

I don't know if outside links are allowed here but maybe this will help.

4.3L Rocker Swapping 101