Quote:
Originally Posted by gabedrummin
I will try to get my hands on some test equipment this week end , and report back the findings .Both heads had a valve job less than 2 thousand miles ago by Hoffman machine . But anything is possible . My idea was to swap injector from 4 to 5 to see if the problem follows the injector .Thank you for all your comments . You are all extremely knowledgeable and I am great full for the help..!
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If I am correct with my guess that the issue is in the valves you will probably be able to see the affects the easiest with a compression test of all cylinders.
Any cylinder with valve issues will show a lower compression.
If you do a vacuum test your looking for 18-22 in.hg with a rock solid needle. like it is painted on the gauge.
If the needle quivers or ticks or drifts that points to valve train issues.
When you do the compression test:
Be sure to pull the fuel injector fuse
Block the throttle body butterfly wide open
crank the engine the same amount of time for each cylinder.
Record compression on each cylinder.
Let us know how you go.
Always interested in outcomes
It will be grand if it is just a leaking injector
Easy fix
