I have a 1994 metro geo with a rebuilt engine in it, have had it for a little over 2 years and have put about 150,000 miles on it. I have had a problem with it recently to where it will lag going up hills, and has noticed a rough idling. We have replaced the spark plugs and bought a new air filter and had a oil change and oil filter, and also have had a fuel injection cleaner put into it. What should I do next?
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Do some diagnosticks first before you spend any more money.
Compression test
Vacume test
Fuel pressure test, before and after the fuel filter.
Then note the reults and we can take it from there.
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