| Author | Message | ||
| Jack Habits (Ferraristuff)
Junior Member Username: Ferraristuff Post Number: 89 Registered: 4-2003 |
Hehehehehe.... | ||
| JRV (Jrvall)
Intermediate Member Username: Jrvall Post Number: 1316 Registered: 11-2002 |
>>A really good mechanic would know that... ;-) << Jack, he said he had a mechanic, he didn't say he had a good mechanic...lol. | ||
| Jack Habits (Ferraristuff)
Junior Member Username: Ferraristuff Post Number: 88 Registered: 4-2003 |
>>>By the way, what would the mechanic do, when he checks it? A really good mechanic would know that... ;-) But basically, he should hook the car up to a tester, run it through the RPM range and compare the ignition timing "map" with the factory map (WHEN does the advance set in and how much advance does it get). If the springs are indeed weakened (which does happen a lot), the measured advance will differ from what the factory prescribes. Same goes for broken or detached springs. A bent distributor axle will give irregular results (i.e. different timing on the various cylinders). Jack | ||
| "The Don" (Mlemus)
Advanced Member Username: Mlemus Post Number: 4027 Registered: 8-2002 |
I'm with JRV on this one. | ||
| Juan Carlos Espinosa (Jce)
New member Username: Jce Post Number: 2 Registered: 4-2003 |
Thank you for all of you responces. At increasing rpm, the sound coming out of the muffler indicates that might be something loose inside. I will check to see if it does it at certain RPMs and post it back. Also I will have the distibutor check. By the way, what would the mechanic do, when he checks it? | ||
| Jack Habits (Ferraristuff)
Junior Member Username: Ferraristuff Post Number: 87 Registered: 4-2003 |
JC, can you notice a particular RPM at which the poor running sets in? Is it over the whole RPM range or only setting in at a certain RPM? Jack | ||
| TomD (Tifosi)
Advanced Member Username: Tifosi Post Number: 3329 Registered: 9-2001 |
poke and hope -  thats funny | ||
| Jack Habits (Ferraristuff)
Junior Member Username: Ferraristuff Post Number: 86 Registered: 4-2003 |
I tend to go with JRV. Sounds like the advance curve of the distributor is screwed up. Could be loose or weak springs on the weights or a bent distributor axle. I would look there first before I would go for the muffler. Jack | ||
| JRV (Jrvall)
Intermediate Member Username: Jrvall Post Number: 1312 Registered: 11-2002 |
>>speculation costs you money<< OHHhhhh Yea...Poke & Hope, By Guess or By Golly...very expensive...but you do get a restoration one guess at a time. ;-) | ||
| JRV (Jrvall)
Intermediate Member Username: Jrvall Post Number: 1311 Registered: 11-2002 |
<<The mechanic thinks that the exhaust baffle have fallen apart inside and is clogging the exhaust thus the poor running. He suggest replacing the muffler. Also<< Not where I'd start looking for the problem. I think I'd start with a Distrib Check of the advance curve operation and very likely a Distrib Rebuild. | ||
| TomD (Tifosi)
Advanced Member Username: Tifosi Post Number: 3327 Registered: 9-2001 |
if you have a mechanic looking at it I would think he could tell with a few tests if the muff has bit the dust - speculation costs you money | ||
| Juan Carlos Espinosa (Jce)
New member Username: Jce Post Number: 1 Registered: 4-2003 |
I have a 1976 308 gtb (fiberglass). Ever since I bought it (10 month ago) it has been running poorly. The car hesitates when you step on it and does not seems to have all of the power. I have rebuilt the carbs but the problem still exist. I have change the points, ignition wires and set the timming but still runs poorly. I have recently noticed that it seems that inside the muffler there is something loose that might be clogging it up. There is more hot air discharge from one side of the tips than the others. Also, a white spot that looks like white powder appeared in the middle of the muffler. The mechanic thinks that the exhaust baffle have fallen apart inside and is clogging the exhaust thus the poor running. He suggest replacing the muffler. Also, he cheched the sychronization of the carbs and found them ok. Has anyone had this problem?. Any insights would be appreciate it. You can e-mail me at [email protected] if you want. Thank you in advance. JC |