| Author |
Message |
david handa (Davehanda)
Member
Username: Davehanda
Post Number: 652
Registered: 5-2001
| | Posted on Tuesday, April 22, 2003 - 10:16 pm: | |
Yeah, when I got water in my spark plug holes it was always the front bank that did it. Becareful of resting anything on top of the roof, above the rear window, that metal is very thin. I had to go to the dent wizard after and get the little marks I made with my right elbow removed! |
Mike Procopio (Pupz308)
Member
Username: Pupz308
Post Number: 306
Registered: 10-2002
| | Posted on Tuesday, April 22, 2003 - 9:02 pm: | |
Ah that's right, thanks for the tip.
Another interesting thing to note... My EGT gauge has been reading a little lower since this thing began.
I guess that would make sense, firing on 7/8 would translate to a reduction in overall EGT temperature... My EGT gauge reads the front bank only. Argh... Possibly means the issue is in the front bank!
Heading out now...
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david handa (Davehanda)
Member
Username: Davehanda
Post Number: 649
Registered: 5-2001
| | Posted on Tuesday, April 22, 2003 - 8:55 pm: | |
There is a spark plug tool in the factory tool kit. It works well. |
Mike Procopio (Pupz308)
Member
Username: Pupz308
Post Number: 305
Registered: 10-2002
| | Posted on Tuesday, April 22, 2003 - 8:46 pm: | |
Thanks david. I'm going to check things out tonight.
There is *no* reason why I would see an *increase* in fuel mileage with this condition, right? I just filled up and did the calcs... I went from 10/11 to 13... Very strange.
Car is still behaving a bit strange though. I've never pulled the plugs myself, guess now is as good a time as ever to do this. I'll read up in the archives before I get too crazy!
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david handa (Davehanda)
Member
Username: Davehanda
Post Number: 645
Registered: 5-2001
| | Posted on Tuesday, April 22, 2003 - 2:56 pm: | |
Mike,
Yes, the power loss is decernible, but not great, so you notice something is "not right", but the power loss is not huge. As soon as you fix it, you go "ah ha!...that's what I was missing!"
I found that after I fixed the water in the plug hole, the spark plug was so fouled on the tip, that it needed to be replaced. |
Mike Procopio (Pupz308)
Member
Username: Pupz308
Post Number: 304
Registered: 10-2002
| | Posted on Tuesday, April 22, 2003 - 2:24 pm: | |
Thanks for your responses.
What I'm hearing is that running on 7 cylinders isn't an extreme "oh my god, something's wrong here" sort of feeling, it's more subtle.
I'll have a look at the extenders, then check the resistance of the wires. If everything checks out, I'll pull the plugs. I'll post back with what I find out...
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david handa (Davehanda)
Member
Username: Davehanda
Post Number: 641
Registered: 5-2001
| | Posted on Tuesday, April 22, 2003 - 1:35 pm: | |
My 78 308 would run on 7 cylinders at low rpm, then on all 8 at higher rpms if I got water down in the plug holes. I would have to park it, and remove each cover and plug to find the bad one. Often, just to be safe, I would replace that plug. Then it was fine. I finally bought 8 new rubber plug caps and never had that happen again.
Mark, I would bet you have a bad extender,...but could be a bad wire. Take out all your extenders and give them a quick visual check. It you see arcing or burn through marks, I'd just replace all of them. If they look fine, then you may need to do a resistance check on the wires. |
Mark Pautz (Malfark)
Junior Member
Username: Malfark
Post Number: 203
Registered: 10-2002
| | Posted on Tuesday, April 22, 2003 - 1:21 pm: | |
Guys,
I experienced somthing similar with my Euro model 328 GTS this weekend. At high RPM there was no problem and the car was running on all 8 cylinders. However, at lower RPM, I believe it was running on only 7 cylinders � I could feel the 8th cut in when the RPM increased. This was somewhat worrying.
Plugs, cables and coils??
Cheers, MARK |
Tom Treue (Treue)
New member
Username: Treue
Post Number: 34
Registered: 4-2002
| | Posted on Tuesday, April 22, 2003 - 12:56 pm: | |
Mike:
I had a similar problem with my 82 GTSi European. Most of the time performance was not exactly breathtaking but still OK. But, when I took the car to the '01 FCA National Meet and ran it on the track, I could feel a definite lack of power and a clear roughness. After I got home I pulled one of my new plugs and it still looked brand new!! After 400 miles!! I tested the spark plug leads and extensions with an ohmeter and found several wires and extensions totally open (All the wires and extensions should have a consistent resistence.). After replacing all the wires and half the extensions (both are pretty inexpensive) it ran much better and on all eight cylinders. This may not be your problem, but the symptoms seem similar.
Tom Treue |
Mike Procopio (Pupz308)
Member
Username: Pupz308
Post Number: 296
Registered: 10-2002
| | Posted on Tuesday, April 22, 2003 - 1:02 am: | |
As I spend more and more time with my 78 308, I feel like I'm beginning to notice subtle not-so-smooth misfires or "non-fires" with the engine...
Never a loud popping or bank, and I never feel the engine shake the car or anything, but more a subtle lack of power and, most notably, where I'm used to getting random pop and gurgle on overrun, I'm now getting a more rhythmic, periodic pulsing in the popping and gurgling.
Also, you know, when the engine's running, it doesn't sound like a lexus. It's not smooth. From time to time, there are small anomalies in the engine's sound, small a pop here, a louder sound there. Not backfiring, and not a formal misfire (like I've heard on the car before and have since remedied).
My question is, if I were down one cylinder... Would I feel it? I mean, *really* feel it?
I am beginning to suspect that my carbs have gotten out of sync...?
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