PeachParts Mercedes-Benz Forum - View Single Post - H-E-L-P ! Engine miss persists after valve job..

Andy_M · #5 09-09-2007, 10:08 AM

Quote:

Originally Posted by brewtoo

I suspect you are making this more complicated than it is. Many of the things you are concerned about could not be causing your problem.

If you have compression and you have a good spark (nice blue, not yellow), but you still have a miss, well, you have a fuel problem. Your problem is isolated to this cylinder and it could very well be that what caused the cylinder to be "dead" before the valve job was not the valve, but the fuel problem you have now.

The injectors don't often go bad, but has yours? Seems like you should be looking at the number 3 injector or perhaps the fuel distributor itself.

Good luck, and please keep us posted.

Yea, the more I thought about it last night, the more I thought injector. May have been the real culprit all along, but once we saw the low compression on #3 and pulled the head and saw a chip out of the valve, it sure seemed that was the logical choice....guess not. I just hope its an injector and not the fuel distributor....

I will check out the injector today. Head needed the rebuild anyway - valve guides and seals were shot and a valve was damaged. This thing should run like a top once I get this fuel situation on #3 fixed.

Thanks,
Andy