My 91 Acura legond moter cranks over but won't
Engines need 3 things to run-spark, compression and fuel/air. Check the simplest things first. When you turn the key and the warning lights come on, does the check engine light come on? It should turn off in 6 seconds, if everything's ok. I Check the air filter, make sure it isn't plugged up. Take off the oil fill cap, and look in. I believe you can see the rocker/cam, use a flashlight. Have someone crank the engine with the key, see if the cam turns, rocker moves. If not, broken timing belt. Next remove an igniter, put a plug in it, have it plugged in and hold the plug near a ground. Have it cranked, check for spark. If no spark, it needs more professional diagnostics. If yes, Fuel is left. If you sit in the drivers seat, windows up and quiet, turn the key to run, all the warning lights come on. The fuel pump runs for 2 seconds, a low hum from the back. You can usually here it if it is quiet around you. (Just because it makes noise, doesn't mean it's good.) Your car also has a main relay that powers the fuel pump, a common failure. Last thing to try is starting fluid sprayed into the throttle, throttle open 1/2 way, while someone cranks.
One of these should lead you to the failure. Note: the main relay is powered by the ignition system, except for that initial 2 seconds. So if there is no spark, the fuel pump won't work either.
10/23/2014 5:37:07 PM •
1991 Acura...
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