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runs like crap; engine troubleshooting help
Topic Started: Feb 28 2012, 12:37 PM (509 Views)
sportscar
Fresh Fish
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I have rebuilt the entire engine in a 92 geo metro 1.0. after 20k miles I am having problems with poor acceleration, very poor fuel economy, loss of power, and hard starting. I have reset the only known code( map sensor) It then ran great for about 30 minutes, then back to the previous problems.;; filters, fuel pump,press regulator, coil, plugs, wires, cap rotor, distributor,vac hoses, pcv, and alot of other stuff has all been replaced, the check engine light never comes on, except when i do a pcm reset, and run the diagnostic, then the only code i get is 12.. compression is 165 to 170. any suggestions would be greatly appreciated, thank you, kevin
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Old Man


check fuel pressure (new does not mean correct). look to see if injector is spraying correctly

I'm sure others will post more items to check
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idmetro
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Welcome aboard! Did you clean and reconnect the grounds on the back of the intake manifold? I also suggest you pull the timing cover and check to make sure all is still properly aligned there. Good Luck!
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