| Author |
Message |
'75 308 GT4 (Peter)
Intermediate Member
Username: Peter
Post Number: 2036
Registered: 12-2000
| | Posted on Sunday, September 22, 2002 - 4:31 pm: | |
It also helps to hold a small cup under the valve to catch all the coolant that runs out (instead of it dripping onto the frame, the under-tray and worse, on the driveway)... |
Darrell Pardy (Dpardyferrari)
New member
Username: Dpardyferrari
Post Number: 6
Registered: 8-2002
| | Posted on Sunday, September 22, 2002 - 3:57 pm: | |
Rob: On the front right side of the radiator there is a small valve. After running the car for 30 minutes or so and its up to temperature you can turn the valve (I recommend gloves) to let air escape. I would also recommend turning on your heater for about 30 seconds before shutting the car off to aid in bleeding the entire system. Turn the valve and you should hear the air escaping and then get air/coolant bubbling mixture. 20-30 seconds should be enough and when you start getting straight coolant coming out close the valve. The valve should only be tightened by hand and you do not need excessive pressure. My mechanic tells me to do this after each weekend if I've been running the car. You should find a schedule that works best for your car as I am finding these babies tend to be all a little different. |
Darrell Pardy (Dpardyferrari)
New member
Username: Dpardyferrari
Post Number: 5
Registered: 8-2002
| | Posted on Sunday, September 22, 2002 - 3:50 pm: | |
Thanks for the responses. My car is now running fine after doing the following: I did reposition the floor mat to make sure it was not touching the pedal and put a little lubrication on the end of the throttle cable. Not sure which did the trick but the car now idles around 1100 rpm. With respect to the overflow of coolant I ran the car for half an hour or so and then bled the radiator. After the car cooled down I took a reading on the overflow tank to find out there was too much(4 cm below the top)coolant in there. So I dropped the level to about 6 cm below cap. Ran the car all weekend in a club event and it was great. |
Rob Lay (Rob328gts)
Board Administrator
Username: Rob328gts
Post Number: 2190
Registered: 12-2000
| | Posted on Friday, September 20, 2002 - 4:09 pm: | |
How do you bleed the water system? I know how to on brakes and steering. |
'75 308 GT4 (Peter)
Intermediate Member
Username: Peter
Post Number: 2025
Registered: 12-2000
| | Posted on Friday, September 20, 2002 - 2:21 pm: | |
Dude, you're back! How was the summer job? |
BretM (Bretm)
Advanced Member
Username: Bretm
Post Number: 2667
Registered: 2-2001
| | Posted on Friday, September 20, 2002 - 2:18 pm: | |
The coolant in the expansion tank should be like 6cm below the top when cold, so just leave some room. Bleeding it isn't going to cause a leak and I tend to think is a good practice. I tend to do it what most would consider often, it only takes a second. The overflow tube should automatically correct it to the right level, theoretically.
Throttle springs and a simple mechanical fix would be nice. A little trick is to squirt some engine oil into the outer sheath of the throttle cable, hold a rag over the end and blow air into it with the air hose, repeat this a couple times, that'll ensure that is in good order. The spring is straight forward. I assume you have a throttle position sensor, that could be a problem, not likely though as it is a simple system. Check for vacuum leaks. Mine was doing the same thing for awhile and I realized the plug was missing from the injection system housing, the little rubber plug that goes between the system itself and the airbox. It plugs up where you adjust the CO setting. Just a thought... |
david handa (Davehanda)
Junior Member
Username: Davehanda
Post Number: 222
Registered: 5-2001
| | Posted on Friday, September 20, 2002 - 1:28 pm: | |
Just leave it alone for a while, don't bleed, don't top off and see if it stops. It may just not need to be filled so much. As far as the fast idle, check that the floor mat is not slipping forward. Both my 308 and 328 suffered from high idle, and I traced both to slipping floor mats! |
Mark (Markg)
Member
Username: Markg
Post Number: 260
Registered: 2-2001
| | Posted on Friday, September 20, 2002 - 9:57 am: | |
My '82 GTSi did same thing - turned out to be a stuck throttle return spring (dirty) and over-filled tank....(as well as a too-low preasure radiator cap) |
Eric Eiland (Eric308gtsiqv)
Member
Username: Eric308gtsiqv
Post Number: 413
Registered: 11-2001
| | Posted on Friday, September 20, 2002 - 9:33 am: | |
Darell...had the same service(s) done to mine as you did on yours, except for the radiator cap (I had changed that out previously with a new factory one). I must point out that I usually only get to drive the car about once a week. That said, it initially revs about 2500-3000 RPM at startup. Oil pressure comes on strong after a couple of seconds. I let it rev in this range for roughly 30 seconds or so and then give the throttle a good "blip", and it usually settles down to around 1500 RPM (or less). I haven't bled the system since the service (5 months ago), and only noticed a tiny amount of coolant on the garage floor after the first time I drove it right after the service; however, I haven't had any coolant loss since. So, I'm not certain that this is the "nature of the beast" with 308 QV's of this age...and that they may all have the cold-start idle (?) Just thought I'd share my experiences so as to help give you a reference. |
TomD (Tifosi)
Intermediate Member
Username: Tifosi
Post Number: 1362
Registered: 9-2001
| | Posted on Friday, September 20, 2002 - 9:25 am: | |
check the throttle cable in the engine bay - it may be hung up. If the coolant is coming out of the overflow it just maybe he overfilled it. Should stop after a while. If the mechanic is close by I would not hesitate to go back and have him trouble shoot. |
Darrell Pardy (Dpardyferrari)
New member
Username: Dpardyferrari
Post Number: 4
Registered: 8-2002
| | Posted on Friday, September 20, 2002 - 9:07 am: | |
Here is a variation on similiar threads. My 1984 QV has just had a major service including - new water pump, belts, thermostat and radiator cap. Car ran great for a couple of days. Now when I start it up it revs up to 3000 rpms and never really comes down. I can actually drive through my home town without depressing the accelerator (the floor mat is positioned correctly). When I stop the car I usually lose some coolant (coolant on the ground is only luke-warm to touch) out the overflow tube - not a lot but more than I should. FYI - The water temperature guage is reading around 195 and I am bleeding the system regularly. Any thoughts before I take the car back to the mechanic???? |