| Author | Message | ||
| James Angle (Jimangle)
New member Username: Jimangle Post Number: 41 Registered: 9-2002 |
check to see that you installed the plugs correctly, and didn't screw anything up while installing them. If you don't have the correct socket while installing them, you could actually break the plug, and if they're in a difficult spot where you had to put them in with the socket at an angle, it could have cracked the plug. Just take the wires off, and see if there is any play with the plug. | ||
| Hans E. Hansen (4re_gt4)
Intermediate Member Username: 4re_gt4 Post Number: 1210 Registered: 4-2002 |
I find it doubtful that you would have any sort of air restriction. Probably just overrich, maybe from a bum float or needle valve. Other reasons, too, but that isn't a bad place to start. | ||
| Mike Procopio (Pupz308)
Member Username: Pupz308 Post Number: 329 Registered: 10-2002 |
Want to thank everybody for all of their help with changing out the spark plugs, checking the plug wires, etc. to help figure out the problem I was having with my 308. I thought I was running on 7 cylinders--two plugs smelled like gas, one plug was much darker than the others. All the plug wires checked out fine. However, I put all the plugs back, and took the car out for a run. It's not as smooth as it was before the problem started, and doesn't seem as powerful. Finally tonight, I pulled the plug wire with the engine running to really understand what it's like to be down a cylinder. It was MUCH rougher than I was experiencing. That is, by pulling the wire, I realized that being down a cylinder made the engine sound much rougher than it sounded when they were all plugged in. It's possible that I was already down a cylinder, and by pulling the plug wire, I was actually down two cylinders; I'll have to check on this. Anyways, my suspiscion has turned to the carbs. Two plugs smelled like gas, and I had some loss in power, some loss in smoothness, and a loss of engine gas temperature. The two plugs that smelled like gas were right next to eachother. The symptoms seem to suggest that one or two cylinders are not getting the air they need--e.g., the mixture is going way rich. This would cause an excessive fuel smell, reduced combustion temperature, and (possibly) reduced power given that there was a lack of oxygen to achieve full combustion. Does this sound reasonable, or have I gone mad? What could cause a restriction of air into the chamber? Any jet that meters air--the air corrector jets--anything else? My next step is to remove the airbox and get a good look at the carbs, specifically the front right one that I assume deals with the right two cylinders on the front bank. Thanks again for your help so far, and any further thoughts would be appreciated...  --Mike |