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The bore looked great, honed it down with a 3 stone tool and got the whole cylinder to have a nice cross-hatch. Got it all put back together and it runs great now, smooth as can be and I can't hear a miss at the tailpipe. Honestly it's never run better since I got it so I think the guy sold it...
Well I went ahead and did a cold compression test again and the results came back as before... Cylinders 2-6 had 145+ PSI, Cylinder 1 only had 40 PSI.
Well obviously something was wrong with cylinder 1 and after I put some compressed air in the cylinder the most significant portion of leakage...
I am planning on doing a leakdown to pinpoint where the problem is. I did not check the head for flatness, but unless there is some significant curvature at the front of the head I doubt that is the issue considering every other cylinder was around 180 psi.
As for the cam/lifters, I can see...
Pulled the head, cylinder walls looked fine so I went ahead and replaced the head gasket, torqued it down then did compression test again.... still 50 psi, so I'm thinking bad rings which would be the reason I probably had such low manifold vacuum.
Could I still have bad rings without any...
Well, did a compression test. All cylinders were fantastic except for cylinder 1... Only 50 psi. Gonna pull the head, I'm guessing I blew the head gasket between the coolant passage and the cylinder. Got a fun day tomorrow!
So I installed the mustang injectors and I'm not noticing a difference in my idle. It's still not right, somewhat rough and can hear a random misfire at the tailpipe with the smell of fuel.
What should my MAP reading be using a code reader? I'm getting between 9 and 11 "HG which from what I've...
This is what I was thinking... I really hope this is what's happening because that would explain some of the issues that I've been having or had happening. I won't jump to conclusions until I get the mustang injectors in there and I'll let y'all know. Well I'm just keeping my fingers crossed...
I'm kind of shocked nothing bad has happened yet but I will definitely be putting in the Ford 24#s.
I understand the impedance is going to cause a larger current flow from the PCM and could possibly damage it, but I'm curious to know if anyone knows more behind this and what exactly is going...