missing on start?
I just went to the grocery and when I started to come home it acted like it is missing. Maybe even more than one cylinder. As I revved it and rolled through the lot it finally came up to running right. I'm letting it cool before I check the oil. How do I diagnose what the problem is if it has enough oil?
Edit- 1994 3.9 Magnum
Edit- 1994 3.9 Magnum
Last edited by onemore94dak; Apr 7, 2026 at 08:41 AM.
1994 3.9 I did not notice any dash lights. When the sun comes up I will check the oil and start removing plugs to see what they are doing.
Last edited by onemore94dak; Apr 7, 2026 at 08:44 AM.
OK. cyl 2 plug was clean. When the plug boot came off cyl 4 it left the connector behind. The plug had oil on it. Cyl 6 plug was also oily. Cyl 5 plug was oily. Cyl 3 plug was oily. Cyl 1 boot came off leaving the connector behind. Plug was oily. By oily I mean at the bottom thread, the tongue(?) and post was dark but no build up.
I deduce from that that the wires are a problem if not the problem. Those were the spendy 8mm wires from RA. Anyone have a store bought recommendation? The wires won't slide in the boot so I can't repair them. Seems like that was the tuneup that won't stop giving.
I deduce from that that the wires are a problem if not the problem. Those were the spendy 8mm wires from RA. Anyone have a store bought recommendation? The wires won't slide in the boot so I can't repair them. Seems like that was the tuneup that won't stop giving.
o'Reilly's was closest. I did not specify past the vehicle and they were $52 lifetime guarantee.
Got home none of them were the same length, short by inches, as the ones I had which were as short as possible. Went back, they had to order new ones, got a refund.
Went to AZ, 2 more blocks, got their limited lifetime (as long as you own it) guarantee wires. They fit it runs like I stole it again. $42 It had an extra coil wire slightly shorter in it too.
Found out they also sell cut them yourself wire kit for $27 same guarantee.
I used dielectric grease on them this time. I think this may be a new "standard" for quality to get us to buy more. When I removed the rest of the wires two more connectors broke free. Oh yea the oil level was fine.
Got home none of them were the same length, short by inches, as the ones I had which were as short as possible. Went back, they had to order new ones, got a refund.
Went to AZ, 2 more blocks, got their limited lifetime (as long as you own it) guarantee wires. They fit it runs like I stole it again. $42 It had an extra coil wire slightly shorter in it too.
Found out they also sell cut them yourself wire kit for $27 same guarantee.
I used dielectric grease on them this time. I think this may be a new "standard" for quality to get us to buy more. When I removed the rest of the wires two more connectors broke free. Oh yea the oil level was fine.









