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    1997 'Hoe runs rough after top end rebuild

    Used a fuel pressure guage and consistently reads between 58-62 psi, and that is key on as well as running. The exhaust smells very rich. I am starting to think o2 sensors but no dtc shows up for one.
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    1997 'Hoe runs rough after top end rebuild

    I dont have a scanner capable of that. I could ask around and see if I can find someone this weekend that has one I can use. I figure its either o2 sensors or fuel filter. something is choking out the engine. Its either too much fuel due to malfumctioning o2 sensors or a lack of fuel because...
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    1997 'Hoe runs rough after top end rebuild

    Ok. Everything seems to check out. It idles rough and wants to die in gear at idle at times. I did notice that it is burning an excessive amount of gas, so my next question; do I need to replace the o2 sensors? I havent popped any dtc's that refer to o2 sensors. When the head gasket blew, there...
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    1997 'Hoe runs rough after top end rebuild

    Im not getting a MAF error I am getting MAP errors. The only time I het a MAF error is when it isnt connected. But I do consistently get the Manifold Absolute Pressure error at different times. What causes those and what do I do about it? Thanks again for all your help in troubleshooting...
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    1997 'Hoe runs rough after top end rebuild

    Just curiosity but how to bad plugs cause MAP errors? So just to summmarize what you said, theoretically I could be done if I get the right plugs? That SHOULD be the only culprit that stands in my way?:rocking:
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    1997 'Hoe runs rough after top end rebuild

    ok. sorry about the delay in replying. I had starter issues and have been working on getting this resolved. So i took care of the p1345 code and now it is mostly running. It is still difficult to start but runs decent after that and got to the point that it is driveable but it does want to die...
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    1997 'Hoe runs rough after top end rebuild

    At this moment I think the only other code is p0300. From what I found that is the code for misfire w/o a specific cylider. there was a code that popped up in correlation to a map sensor. I forget the trouble code associated. I live about 30 min south of fresno, so no I am not terribly close...
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    1997 'Hoe runs rough after top end rebuild

    I am new here and this is a first posting anywhere so bear with me. I have a 1997 tahoe 350 5.7L 4 door 2wd. Has just over 141K on it. A head gasket blew and cracked a head so i bought new heads online as well as a full gasket set, cap, rotor, wires, spark plugs. After banging head...

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