Originally Posted by Jason Drew
Originally Posted by Ian Burnside
Originally Posted by Jason Drew
Originally Posted by Bryan Lawrence
Is fuel lab replacing the diaphragm for you?


Nope, this is the second time I replaced it. I'll just add it to the yearly maintenance from now on to put in a new one, $20 is worth it for peace of mind.


Forgive my ignorance, but how does a failed diaphragm cause your head gasket to fail?


Massive drop in fuel pressure=lean condition/higher combustion chamber pressures.


Gotcha. I was thinking about it all wrong.