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Are the ignition coils causing the misfire?
1998 Ford Ranger with 2.5L SOHC engine; 215k miles. MIL is ON. Code P0301: Misfire detected on cylinder 1. The spark plugs and plug wires are not very old - the plugs are bright and shiny, and the plug wires have a light coat of dust on them, but look very good, so I don't think that's the problem. I held an extension between my ear the the fuel injectors and they didn't sound different or abnormal, so then I installed a timing light, and it seemed that the timing light would skip a flash every 10 ignition cycles or so, but only at idle. Does it seem logical that the ignition coils are the problem? Does each module fire four plugs individually, or is this a waste spark ignition system? Is there any other way to diagnose the coils or the misfire condition?
8 Answers
- BrentLv 78 years agoFavorite Answer
This is a waste spark system that those 8-spark plug four cylinders use. An engine that up in miles probably could use a compression check.
=== replace the distributor cap that has the spark plug wires hooked into it and get a new rotor that is under that cap == you might try to clean that cap and the rotor to see if that improves the firing ...
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What distributor cap in a Ranger four cylinder would that be? I'm almost dying to hear this one! Give me my laugh for the afternoon, dude!
Didn't know that Ford was so advanced using coil packs.
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A Ranger four cylinder engine hasn't used a distributor since 1989. The 4.0L v6 has never used a distributor. The 3.0L hasn't used one since 1994. An F150 hasn't used a dizzy since 1996. A Panther car? Since about 1991 or the last 5.0's. The Exploder clones have never used a distributor.
You were saying?
- Anonymous6 years ago
This Site Might Help You.
RE:
Are the ignition coils causing the misfire?
1998 Ford Ranger with 2.5L SOHC engine; 215k miles. MIL is ON. Code P0301: Misfire detected on cylinder 1. The spark plugs and plug wires are not very old - the plugs are bright and shiny, and the plug wires have a light coat of dust on them, but look very good, so I don't think that's the...
Source(s): ignition coils causing misfire: https://biturl.im/9lUkE - Anonymous8 years ago
Didn't know that Ford was so advanced using coil packs. Yes, it is the coil pack- replace all four. A timing light won't help.
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- XTXLv 78 years ago
=== replace the distributor cap that has the spark plug wires hooked into it and get a new rotor that is under that cap == you might try to clean that cap and the rotor to see if that improves the firing ...
- 8 years ago
