Subaru_dude Posted May 9, 2005 Share Posted May 9, 2005 My 87 gl feels like it's running on 3 cylinders again. I put new spark plugs in, but not new spark plug wires. it's the #3 plug, it's just not firing. Do you think that after the first plug stopped firing, the new plug temporarily fixed the prob but after a while even that wouldn't fire? the wires don't seem to look that old..... distrubitor? the idle is becomming eratic too. maybe I should check for vacuum leaks? thanks for any help Jordan Quote Link to comment Share on other sites More sharing options...
Ross Posted May 9, 2005 Share Posted May 9, 2005 Have a look at your engine running in the dark. If its the leads, you will sometimes see sparks shooting off where they shouldn't. Quote Link to comment Share on other sites More sharing options...
hooziewhatsit Posted May 10, 2005 Share Posted May 10, 2005 you could try swapping the wires for 1 & 3 and see how it runs/looks. Quote Link to comment Share on other sites More sharing options...
Subaru_dude Posted May 10, 2005 Author Share Posted May 10, 2005 you could try swapping the wires for 1 & 3 and see how it runs/looks. I know for sure that's not it..... it ran well for a while then started running like crap again. Quote Link to comment Share on other sites More sharing options...
NoahDL88 Posted May 10, 2005 Share Posted May 10, 2005 get new wires, or swap the wires and see if the foul follows the wire, if this is mpfi it could be a leaky injector. Quote Link to comment Share on other sites More sharing options...
Caboobaroo Posted May 10, 2005 Share Posted May 10, 2005 test the plug wires with an ohm meter to see what kind of resistance they have. If the #3 is bad, the resistance will be a lot more then the others Quote Link to comment Share on other sites More sharing options...
Russ Hill Posted May 10, 2005 Share Posted May 10, 2005 Is it wet and oily? It may just be time for a rebuild. Could be bad rings or valve stem seals. I had the same problem on #4 with one of my hatches. I didn't want to deal with rebuilding the motor so I just kept spare plugs around and changed the plug when it got too fouled. My 87 gl feels like it's running on 3 cylinders again. I put new spark plugs in, but not new spark plug wires. it's the #3 plug, it's just not firing. Do you think that after the first plug stopped firing, the new plug temporarily fixed the prob but after a while even that wouldn't fire? the wires don't seem to look that old..... distrubitor? the idle is becomming eratic too. maybe I should check for vacuum leaks? thanks for any help Jordan Quote Link to comment Share on other sites More sharing options...
Subaru_dude Posted May 10, 2005 Author Share Posted May 10, 2005 I dunno about a rebuild..... it only has 162,000 miles on it and the lady I bought it from didn't put cheap oil in it and always changed it on time. and if it needed a rebuild, it'd be smoking. It doesn't smoke hardly at all. So I'll see how much resistance the #3 wire has and I'll get back to you. Thanks guys. Jordan Quote Link to comment Share on other sites More sharing options...
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