| Author |
Message |
Ric Rainbolt (Ricrain)
Member
Username: Ricrain
Post Number: 496
Registered: 2-2002
| | Posted on Tuesday, February 25, 2003 - 2:21 pm: | |
I worked on a 328 with the exact same problem. Turned out to be the fuel pump. Delivery was fine at low speeds, and the pressure was fine under test, but the pump couldn't deliver the volume. |
JRV (Jrvall)
Intermediate Member
Username: Jrvall
Post Number: 1006
Registered: 11-2002
| | Posted on Monday, February 24, 2003 - 10:06 pm: | |
What are the CO & HC readings? and what did the ignition system patterns look like on a scope? |
James J. McGee (Dr_ferrari)
New member
Username: Dr_ferrari
Post Number: 31
Registered: 7-2002
| | Posted on Monday, February 24, 2003 - 9:42 pm: | |
Mayron,
The converter is a good possibility but, I would also do a fuel pressure test and check the fuel injection head. it is possible that the control valve is sticking and not providing enough fuel when required.
Best regards, Jim
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Dave328GTB (Hardtop)
Member
Username: Hardtop
Post Number: 439
Registered: 1-2002
| | Posted on Sunday, February 23, 2003 - 12:36 pm: | |
Make sure your tach is accurate. 308 tachs usually are, but you need to make sure you are not actually overrevving the motor. Also, catalytic converters (if you have one) can cause this when they begin to plug up.
Dave |
Bill V (Doc)
Junior Member
Username: Doc
Post Number: 250
Registered: 9-2001
| | Posted on Sunday, February 23, 2003 - 9:20 am: | |
Ben--I'm not a mechanic and I'm new to Ferraris so take this input as more of a question rather than hard fact. With re: to igniton functioning, I believe that if the smoothness/ power is breaking down at very high rpms, a bad coil could be the culprit. Based upon what you've said, I'd check the coils themselves--one of them may be breaking down with the need for stronger juice at the high rpm range.At idle and lower rpm functioning, a marginally wearing-out coil may function fine as it doesn't need to produce as much current. Just a thought--good luck--and let us know how this resolves. |
Ben Mayron (Benmayron)
New member
Username: Benmayron
Post Number: 4
Registered: 2-2003
| | Posted on Sunday, February 23, 2003 - 4:21 am: | |
I ve changed the fuel filter. It's the same problem., 6500 rpm and no more. Spark plugs, air filter, fuel accumulator have 2000 miles.
At the same time i've a metallic sound at 2200 rpm, i don't know where it come, all metallic plate are fix. I don't knows if it's the same problems. The throttle cable is adjusted correctly. The electrical connections to the coils are good and tight.
Another advice ?
Thanks for your help |
James J. McGee (Dr_ferrari)
New member
Username: Dr_ferrari
Post Number: 20
Registered: 7-2002
| | Posted on Monday, February 17, 2003 - 1:26 pm: | |
Mayron,
The guys are right, change that fuel filter but since your not sure of service history, I would suggest a complete tune-up with all fluid and filter changes just to get yourself a baseline of service on the car.
I would also suggest checking the throttle cable to see if it is adjusted correctly. you might have your foot buried to the floor but engine at 3/4 throttle. Have someone hold pedal to floor(engine not running) and see if you are actuating the throttle on the engine side to full.
Best regards, Jim |
Timothy Fulmer (Tf308)
New member
Username: Tf308
Post Number: 32
Registered: 5-2002
| | Posted on Monday, February 17, 2003 - 1:15 pm: | |
Also, I have heard that if your fuel pump is on the way out..this will happen. Need to check and see if it is pumping 1000ml/min while disconnected. If it is less, change the pump and hopefully problem is solved. But first, change the filter and see if that solves your problem. |
Ken (Allyn)
Member
Username: Allyn
Post Number: 724
Registered: 10-2001
| | Posted on Monday, February 17, 2003 - 12:03 pm: | |
Change the spark plugs while you're at it. |
mayron (Benmayron)
New member
Username: Benmayron
Post Number: 3
Registered: 2-2003
| | Posted on Monday, February 17, 2003 - 12:01 pm: | |
I m going to check electrical connections and change fuel filter first.
Thank you very much for your help
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Greg Owens (Owens84qv)
Member
Username: Owens84qv
Post Number: 668
Registered: 10-2001
| | Posted on Monday, February 17, 2003 - 11:50 am: | |
Like Ken, I would check your maintenance records for a fuel filter change. If it needs one, it is a less than an hour job. Also, make sure that all of the electrical connections to the coils are good and tight. |
mayron (Benmayron)
New member
Username: Benmayron
Post Number: 2
Registered: 2-2003
| | Posted on Monday, February 17, 2003 - 11:22 am: | |
I dont know.
I 've bought the car 3 month ago.
I drive it 1000 miles whith any problems. |
Ken Ross (Kdross)
Junior Member
Username: Kdross
Post Number: 247
Registered: 2-2002
| | Posted on Monday, February 17, 2003 - 11:03 am: | |
When was the last time you change or gas filter or injectors? |
mayron (Benmayron)
New member
Username: Benmayron
Post Number: 1
Registered: 2-2003
| | Posted on Monday, February 17, 2003 - 10:52 am: | |
I have a problem with my 83 QV. When arrived at 6000/6500 rpm she don't want to go up more. she keep this speed. It's seem like a lack of gas. But from idle to 6500 she run fine
Could you help me ?
Sorry for my english
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