after rebuilding and replacing the turbo a valve has let go on the 'test run'
this was only at 10psi and under 5500rpm so not heavy conditions. at first it was a misfire so i changed coil packs, spark plugs and ignitor amps. nothing. ran a compression test, and it came up with 0 compression in cylinder 4. so it something to do with the valves
i pulled the rocker covers off and rotated the cams and all 4 lifters work fine so its not the valve springs. all looks fine from the top of the engine. so it must be a bent valve or something from the bottom... but does anyone else have any ideas? is there something ive missed in the diagnostic?
can anyone give me any advice with regard to pulling the head off to check from the bottom if a valve is stuffed. how much for a workshop to do this kind of job or any help is greatly appreciated. my budget is already stretched from the turbo job so i have little cash to play with
thanks in advance for any help, it is much appreciated