| Author |
Message |
Charles Barton (Airbarton)
Member
Username: Airbarton
Post Number: 687
Registered: 11-2002
| | Posted on Wednesday, August 06, 2003 - 9:14 am: | |
Jeff and Vince are correct. The problem is likely the flywheel. I had the same problem. There is a phase sensor on the input shaft that tells the Motec where TDC is at start. If the flywheel is out of balance the vibrations cause the sensor to send a bad signal to the Motec. Repack the flywheel or replace it and the problem will go away. if you have the Dual disc clutch you might consider converting to the single disc while you have it apart. It makes a big difference in the cars driveability and is much less expensive to do clutch replacement there after. |
J R K (Kenyon)
Member
Username: Kenyon
Post Number: 599
Registered: 10-2002
| | Posted on Wednesday, August 06, 2003 - 5:16 am: | |
Todd, Press the clutch pedal down when you start it, this helps a lot, some how it balances the flywheel. |
Jeff B. (Miltonian)
Member
Username: Miltonian
Post Number: 492
Registered: 12-2002
| | Posted on Wednesday, August 06, 2003 - 2:40 am: | |
Todd:
The reason that the flywheel causes hot start problems is that a sensor on the engine detects vibration and tells the ECU not to let the engine start. This vibration is caused by a flywheel that has come out of balance, from lack of grease or worn internal components.
Vincent's thread gives great illustrations of how the flywheel looks when it needs servicing.
Repacking the flywheel is done as shown in Vincent's thread. You aren't repacking a bearing. You are installing a measured amount of special grease into a cavity inside the flywheel, where it serves to help balance the internal components.
It is possible that there could be leaks from the slave cylinder or from the triple seal on the input shaft, but these by themselves do not cause the hot start problem.
The key here is rotational balance. If you lose the grease, the flywheel goes out of balance, and the result is a difficulty with hot starts. As far as I know, the problem is unique to the Ferrari 348 and 355.
It's still POSSIBLE that you have a fuel problem, but the flywheel is the best bet, in my opinion.
|
todd montandon (Sllade)
Junior Member
Username: Sllade
Post Number: 212
Registered: 7-2003
| | Posted on Wednesday, August 06, 2003 - 1:35 am: | |
i said something to him about repacking the bearings and he looked at me like i was an idiot he said you mean the throw aout bearing •••• i don't know he said the throw out bearing or the rear seal is definitely leaking. |
todd montandon (Sllade)
Junior Member
Username: Sllade
Post Number: 211
Registered: 7-2003
| | Posted on Wednesday, August 06, 2003 - 1:33 am: | |
jeff whay would the flywheel problem be so i might try to tell this guy to look for. so i son't sound like a complete dumbass |
todd montandon (Sllade)
Junior Member
Username: Sllade
Post Number: 210
Registered: 7-2003
| | Posted on Wednesday, August 06, 2003 - 1:31 am: | |
no there is no noise when i shut it down when i try to start it it sounds like its trying to go in reverse he said i tried to start it for him at the shop right when i got there she started but it was hard and it had only been about 10 seconds or so but there is fluid so he is going to have to fix it anyway i suppose. |
Jeff B. (Miltonian)
Member
Username: Miltonian
Post Number: 491
Registered: 12-2002
| | Posted on Wednesday, August 06, 2003 - 1:22 am: | |
Todd, let me ask you something. When the engine is running at idle, and you shut it off, can you hear a very definite, noticeable "rattling" sound from the engine compartment as the engine shuts off? If you can, chances are about 95% that you have a flywheel problem, and that this flywheel problem is causing your difficult hot starts. I was sceptical about this when I first heard about it, but it seems to be a common problem with 348's, and several people here on FChat (me included) can tell you that the hot start problem disappears when you have the flywheel serviced. |
Vincent (Vincent348)
Member
Username: Vincent348
Post Number: 943
Registered: 4-2003
| | Posted on Wednesday, August 06, 2003 - 1:18 am: | |
Todd,
http://www.ferrarichat.com/discus/messages/112/252357.html
It's in there buddy!!! Do a little reading.
Vincent. |
todd montandon (Sllade)
Junior Member
Username: Sllade
Post Number: 208
Registered: 7-2003
| | Posted on Wednesday, August 06, 2003 - 1:14 am: | |
iwant to see what this guy tells me tomorrow i will definetly let you guys know like i said the general consensous of the mech's is we are all crazy don't know what the hell we are talking about its a fuel problem or starter problem he heard mine and said if it was a flywheel problem you would hera chatter but you don't could even be a timing issue i just don't want to get dicked here cause i only know what you guys tell me i don't know •••• about cars except how to drive them.T |
todd montandon (Sllade)
Junior Member
Username: Sllade
Post Number: 207
Registered: 7-2003
| | Posted on Wednesday, August 06, 2003 - 1:11 am: | |
vincent what actually does repacking the flywheel mean? |
Vincent (Vincent348)
Member
Username: Vincent348
Post Number: 942
Registered: 4-2003
| | Posted on Wednesday, August 06, 2003 - 1:07 am: | |
Todd,
I was told it was not a FW problem as well. But it was, in my case.
Your dark oil coming out of the inspection plate is most likely gear oil coming from between the output and drive shafts. You need the to remove FW and clutch to fix this, might as well inspect the FW.
Vincent.
ps. After repacking the FW, I've had no hot start problems. |
todd montandon (Sllade)
Junior Member
Username: Sllade
Post Number: 206
Registered: 7-2003
| | Posted on Wednesday, August 06, 2003 - 1:06 am: | |
this is one thing i have never had to deal with a car leaving me stranded i always have new cars man i tell you i love my f car but this seriously would make me think about dumping 250,000. on one of these cars i had less problems with my boat.why do we put up with this. |
todd montandon (Sllade)
Junior Member
Username: Sllade
Post Number: 205
Registered: 7-2003
| | Posted on Wednesday, August 06, 2003 - 1:03 am: | |
man justin i'll tell you what i had to leave it running today when i got gas it really pissed me off. but when i went to thisy guy i tried to sound like i knew what the hell i was talking about you know i told him about all the stuff everyone else had done showed him the plug .he said there are fuel air sensors that need to be adjusted sometimes timing could be a reason fuel but he was pretty adament that its not a flywheel deal for hot start problems. |
J R K (Kenyon)
Member
Username: Kenyon
Post Number: 596
Registered: 10-2002
| | Posted on Wednesday, August 06, 2003 - 1:00 am: | |
Todd I hope it works out for OK for you. |
todd montandon (Sllade)
Junior Member
Username: Sllade
Post Number: 203
Registered: 7-2003
| | Posted on Wednesday, August 06, 2003 - 12:16 am: | |
i took my fcar in today because i was so tired of having to plan on being at wherteever i was going for atleast 20 minutes or so. the general consensous on f chat is that the flywheel needs to be repacked. i told the mech that and he said that it is more than likely fuel related. i said what about the oil or grease eminating from my inspection plate .he said could be a throw out bearing rear seal.but still that would not affect starting.i told him about the plugs ect all the things on here.he said fuel.he has it hooked up to a fuel pressure gauge tonight will tell me in the am whats up i will definetly let you guys know. but he is not the only one who told me that its not the flywheel.the ferrari dealer here in san diego and the guys at symbolic and at european auto the guys that have worked on it from day one. it sure is a pain in the as-. |