help ?????????

Asked by Jan 31, 2012 at 10:23 AM about the 1990 Subaru BRAT

Question type: Maintenance & Repair

i have 1990 subaru brat it idels fine but it wont rev out and it tops out at 19mph but
two plugs arnt ingnighting the fuel i have checked them and they have a strong
spark and there is fuel in the tank can anyone help me out thanks

1 Answer

You need to perform a compression test. You probably have no compression in those two cylinders. Remove the plugs, check compression, then add about 2 ounces of oil into the spark plug holes and recheck compression. If compression goes up, you have a problem with the rings. If compression does not go up, you have a problem with the valves or head gaskets.

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