| Author |
Message |
C.C.ofAtlanta (Atlantaman)
Junior Member
Username: Atlantaman
Post Number: 203
Registered: 3-2002
| | Posted on Monday, June 09, 2003 - 5:28 pm: | |
pretty sure advance is ok since i have it on a straight line, and anyway the car intermittantly runs great. |
Russ Gould (Russ)
New member
Username: Russ
Post Number: 49
Registered: 2-2003
| | Posted on Monday, June 09, 2003 - 4:57 pm: | |
308 GT4 manual says it's a straight line. The running points should be at 7 deg btdc and work up to 34 deg at 5000. The earlier cars started at 16 and worked up to 34. Not sure if you can set up a later (smogged) car to the earlier settings...seems to me the advance would not be right among other things. |
C.C.ofAtlanta (Atlantaman)
Junior Member
Username: Atlantaman
Post Number: 202
Registered: 3-2002
| | Posted on Monday, June 09, 2003 - 4:11 pm: | |
Ok--had it running like a champ again for two days--although a bit rich.. I have been running NGK bp7es plugs and I think they are too cool. yesterday i picked up a set of the new iridium platimum bpr-6eix plugs ( for some reason they all come in resistor style) and tried them---car runs like a dog.
I am now leaning towards a plugwire/ plug problem. I had a whole new set of Taylor Supression wires made( suggested by electromotive) but am thinking I am not getting enough spark.
Also--handbook says 6deg advance at idle and 36 @5krpm. anyone know the plot of this line--a straight line? or does it have a curve? |
Philip Airey (Pma1010)
Member
Username: Pma1010
Post Number: 276
Registered: 7-2002
| | Posted on Monday, June 09, 2003 - 1:21 pm: | |
Charles
How are the coils wired? Mine (also direct fire) used a relay to power up, and from time to time (i.e., intermittant) the power lead to the relay "shortens" so it pulls itself out of the connection. Would cause the most awful backfire, lots of flames etc out the pipe. Fix was simple enough (clean, add a bit of silicon to hold in place). HTH |
Andrew A. Illes (Andyilles)
Junior Member
Username: Andyilles
Post Number: 91
Registered: 10-2002
| | Posted on Monday, June 09, 2003 - 12:05 am: | |
Oopsie.
|
Charles I Claussen (Atlantaman)
Junior Member
Username: Atlantaman
Post Number: 193
Registered: 3-2002
| | Posted on Friday, June 06, 2003 - 9:25 pm: | |
Have drained the tanks and got some small rubber pieces out. hope this was the problem--jeeez-- what a bear of a problem
PS Andrew--this is an EFI car |
Andrew A. Illes (Andyilles)
Junior Member
Username: Andyilles
Post Number: 78
Registered: 10-2002
| | Posted on Friday, June 06, 2003 - 8:19 pm: | |
Charles,
Still sounds like a fuel delivery problem. I note you put new filter(s) in.. did you check the filter screens in the carbs also? Keep in mind that a clogged filter, or ANY other obstruction between the tanks' fuel supply and float bowls, can show good pressure.. yet, not allow sufficient volume. Crud in the tanks could do it too. Settles out but in operation gets "sucked" to the intakes to clog them.
Hope this is helpful. |
Charles I Claussen (Atlantaman)
Junior Member
Username: Atlantaman
Post Number: 192
Registered: 3-2002
| | Posted on Friday, June 06, 2003 - 10:30 am: | |
I have 4 direct fire coils--and I did think about that--that is why I replaced the lead wires to them
electromotive tec-3 unit
Today I will test tehm--will warm up motor until it starts sputterig and while running i will unhook one set coils at a time to see which side of motor runs worse or if the same--still hoping it is a gas problem. |
Chris Shenberger (Shenbec)
New member
Username: Shenbec
Post Number: 24
Registered: 4-2002
| | Posted on Friday, June 06, 2003 - 7:37 am: | |
Just a thought. If the car runs fine when cold and then starts to "run on 4 cylinders." Is it possible that one of the two ignition coils is starting to go bad as it heats up. |
Charles I Claussen (Atlantaman)
Junior Member
Username: Atlantaman
Post Number: 188
Registered: 3-2002
| | Posted on Thursday, June 05, 2003 - 10:25 pm: | |
The SAGA continues--all new injectors, new fuel filter, new plugs, new gas, new coil lead wires--car ran awesome for about 2 days( 60 miles) now it is down again.
car runs like a champ for about 10 mins and runs clean to 7000+ then in a few mins starts cutting out like it is on 4 cyls---beginning to think i have something in my gas tank--tried to remove the drain "nipple" but tank started to wrinkle--anyone done this?
Ps--i added some alcohol to the gas to see if some water might have gotten in--nope--no help. |
Charles I Claussen (Atlantaman)
Junior Member
Username: Atlantaman
Post Number: 170
Registered: 3-2002
| | Posted on Monday, May 26, 2003 - 10:27 pm: | |
filter is ok--plug wires are all new and ok--am leaning now towards a few partially blocked injectors at this point. think there is enough flow to run when under no load but not enough when motor loads up.
The part about the cam belt comes from old experience of parking ferraris facing up steep hills and leaving them in gear--if something happens like your foot slips on the clutch and you roll backwards and then engage the clutch to stop---BAM! rotate the motor backwards the belts will jump a tooth in a heartbeat. |
Andy Falsetta (Tuttebenne)
Junior Member
Username: Tuttebenne
Post Number: 147
Registered: 3-2003
| | Posted on Monday, May 26, 2003 - 9:48 pm: | |
When you woke up your car after a long winter's nap, you didn't put Bosch platinum plugs in it did you? I had a bad experience with them but they missfired rather than acting as if the motor was leaning out. |
Andrew A. Illes (Andyilles)
Junior Member
Username: Andyilles
Post Number: 52
Registered: 10-2002
| | Posted on Monday, May 26, 2003 - 7:26 pm: | |
Re: Ferris Bueller. A curb bump can't and won't jump a timing belt. At least not in my 35 years' experience.
Regards again,
Andy |
Andrew A. Illes (Andyilles)
Junior Member
Username: Andyilles
Post Number: 51
Registered: 10-2002
| | Posted on Monday, May 26, 2003 - 7:23 pm: | |
Charles... long shot, but check your plug wires at both ends, make sure the center conductors are all pinched into the metal connectors.
PS You may still have a fuel filter problem despite an ok pressure reading. Pressure and volume delivery are two different things.
Regards,
Andy |
Mark Eberhardt (Me_k)
Member
Username: Me_k
Post Number: 519
Registered: 5-2002
| | Posted on Monday, May 26, 2003 - 11:52 am: | |
If fuel pressure is good, then ignition...any chance there is a loose conection somewhere? Is it OEM ignition or was that replaced too? |
Charles I Claussen (Atlantaman)
Junior Member
Username: Atlantaman
Post Number: 168
Registered: 3-2002
| | Posted on Sunday, May 25, 2003 - 11:18 pm: | |
more to this story though---I drove the car downtown for dinner and it was running strong as an ox. the valet parked it up front and when I came out it idle'd ok but sputtered at 3000+ rpm. First though they pulled a Ferris Bueller on me but then though it was more likely that they had backed it upto a curb and stallled the motor and jumped the timing belts a tooth.
Well the rear bank is ok on the timing and I THINK the front is ok--using a mirror to see the markings..
Just it is really weird that it ran soo well then suddenly fell on its face. |
Charles I Claussen (Atlantaman)
Junior Member
Username: Atlantaman
Post Number: 167
Registered: 3-2002
| | Posted on Sunday, May 25, 2003 - 11:12 pm: | |
pressure is fine--the new efi regulator has a gauge on it.--Am attempting to remove the filter and clean but have also discovered that spark plugs were gapped .035 and that may be adding to the problem. did a compression check and all cyls were from 157-163 psi--that looks good. |
Mark Eberhardt (Me_k)
Member
Username: Me_k
Post Number: 517
Registered: 5-2002
| | Posted on Sunday, May 25, 2003 - 10:01 pm: | |
Yeah, it sounds like fuel pressure. Any way you can put a gage on it? Stock pump? |
Andrew A. Illes (Andyilles)
New member
Username: Andyilles
Post Number: 49
Registered: 10-2002
| | Posted on Sunday, May 25, 2003 - 4:34 pm: | |
Charles... fuel filters?
Andy |
Charles I Claussen (Atlantaman)
Junior Member
Username: Atlantaman
Post Number: 166
Registered: 3-2002
| | Posted on Sunday, May 25, 2003 - 10:27 am: | |
Well, after a long winter and spring, My car is(or was) running again with the new EFI system. I had it running smoothly last week but suddenly it has started- spitting and stuttering severly when under load and seems to be leaning out bad at hi rpm.. Any Atlanta area guys that might care to help out on this let me know--would appreciate any suggestions or help. |