Poor idle and more
I have a 92 with a 2.3, and a 5 speed transmission.
I had the number 3 intake side sparkplug break and blow on a trip a while back. I was forced to drive about 80 miles like this to get home.
I replaced all the plugs (8), the plug wires and a fuel filter at this time.
The engine now stumbles at idle and is a bit draggy off the line but for the most part seems to run well at speeds.
Trying to discover the poor idle I disconnected the harness from the rear
(exhaust side) coil/distributor and one by one removed the plug wires from the front unit. The number 3 cylinder does not appear to be firing. I removed and replaced the new plug with no change in performance. The plug I replaced was not fuel soaked, carbon on one side and a decent brown on the other. There is plenty of spark coming from this plug wire so I don't think it is and ignition problem. I am wondering if the injector has failed and I am not getting fuel or the proper amount of fuel to the cylinder. Or, is the spark being delivererd at the wrong time?
I have no way to check fuel pressure or compression.
Is there a good way to check the injectors?
By the way, the truck actually runs better at highway speeds than it used to. It would not maintain speed in 5th gear unless I had the pedal on the floor and there better not be a hill in the way. This situation had improved considerably.
I bought this truck used last summer and just figured it was worn out and you get what you pay for but I am hopeful that I can make it a bit better.
Any help will be appreciated.