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    Thread: Strange issue

    1. #21
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      I'm being told 165psi compression is good, the vacuum readings this morning was a stable 50, it does however fluctuate in idle causing the vacuum gauge to jump between 45 and 50, I'm being told it's fuel related



    2. #22
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      So i looked over everything i have replaced, repaired etc. And i think I might either be blind or more stupid than i thought, it appears to me that the timing marks on the cams are not 100% lined up but i can't figure out how to post pictures on here to have my opinion confirmed.

    3. #23
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      My timing marks on the cams aren't tooth to tooth either

    4. #24
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      Quote Originally Posted by Z3r0x01 View Post
      I'm being told 165psi compression is good ...
      Well, as I posted previously the (dry) compression on my 13 year old '05 is 200+, so I can't go along with 165 being 'good'. But it's obviously your decision how to continue troubleshooting the issue with this vehicle.

    5. #25
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      Sorry for sounding like a know it all before, i may have found the issue, when the crankshaft mark is lined up, the intake cam is perfect, exhaust cam most definitely is off 1 tooth. Would this give the lower compression reading?

    6. #26
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      I can't say for certain that 1 tooth off would cause lower compression, but it certainly has a highly likely probability.

    7. #27
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      In the midst of all of this, i have taken the time to order a fuel pressure tester for myself, and i am going to invest into a better obd2 reader so that i can continue doing my own repairs.

    8. #28
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      Timing is fixed, car starts and runs alot better, plugs were all burning black as coal, still the p0300, fuel system still going into ol_fault, thinking fuel system issue, thoughts?

    9. #29
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      I'd want to see what the compression and vacuum tests show now, before doing anything else.

    10. #30
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      Also, what should the normal readings for tps and map sensor be when idling and revving? My map sits around 9.8-10.6 and tps is sitting at 12.2.





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