| Author |
Message |
John Millard (Jmillard308)
New member
Username: Jmillard308
Post Number: 4
Registered: 5-2003
| | Posted on Tuesday, June 10, 2003 - 11:31 am: | |
Terry
My owners manual ('76 308) says
allow pump to run for 10 secs
turn to starter and give 1 or 2 pumps
as soon as engine fires maintain idle speed at 3000 rpm for 20 secs
My car has a fast idle control which holds engine revs at about 3000 rpm until water temp gauge starts to move and reverts to normal idle
Then I drive it gently to warm up transmission - normally when oil temp starts to move.
When all is warmed up - give it heaps! |
Terry L (Terrykarr)
Junior Member
Username: Terrykarr
Post Number: 146
Registered: 12-2002
| | Posted on Tuesday, June 10, 2003 - 8:33 am: | |
Thanks for the replys. I've actually had my car for about ten months and have tried different methods of cranking but wanted to see what others have tried. I pretty much tried all of the methods discuss here except for pumping the gas, which I was told not to do back when I purchased the car.
Well, after hearing some of your replys I went out [my car had been setting for a little over a week] and turned the key to the point that the fuel pump started. I let it pump for 15 seconds then pumped the gas twice and turned the key to start and it fired right off, the easiest it has cranked from a cold start yet.
Just goes to show, as much as I have worked with cars in my life time, there's always something to learn. Thanks again. |
Andrew A. Illes (Andyilles)
Junior Member
Username: Andyilles
Post Number: 93
Registered: 10-2002
| | Posted on Monday, June 09, 2003 - 11:37 pm: | |
Rich... you can actually (gently) drive a car a pretty fair distance without oil pressure in an emergency situation, though you'd eventually of course trash the engine. I prefer the decision to do so or not to be mine. |
rich (Dino2400)
Junior Member
Username: Dino2400
Post Number: 249
Registered: 10-2001
| | Posted on Friday, June 06, 2003 - 10:38 pm: | |
Thanks Andrew. Odd that Fiat would provide such a feature but Ferrari not. "Nor need there be one" is subjective: If/when I buy a 246 I will rewire it myself.
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Hans E. Hansen (4re_gt4)
Intermediate Member
Username: 4re_gt4
Post Number: 1458
Registered: 4-2002
| | Posted on Friday, June 06, 2003 - 7:50 pm: | |
No fuel pump cut-off on the 1975 308GT4.
As for cold starts: This is just another opinion, so take it as such. My mechanic thinks some owners are a little too paranoid about driving the cars cold. He says to give it perhaps a 30 second fast idle (say 1500rpm), and then gently drive it. But, as most would agree, don't rev it or heavily load it at least until you see some action in the oil temp gage. |
Andrew A. Illes (Andyilles)
Junior Member
Username: Andyilles
Post Number: 75
Registered: 10-2002
| | Posted on Friday, June 06, 2003 - 7:43 pm: | |
Rich,
There is no such "safety" circuit that I'm aware of or that the schematics show, nor need there be one. If the key is on, the pump runs.
The only starting "secret", as others have noted, is not not to over-rev the engine until it's warmed a little. |
rich (Dino2400)
Junior Member
Username: Dino2400
Post Number: 248
Registered: 10-2001
| | Posted on Friday, June 06, 2003 - 7:15 pm: | |
Thanks for the answer Terry. I'm curious: Do the cars have some other kind of fuel pump shut off switch in case of low oil pressure? If so, how is it wired? On my car the fuel pump could be run two ways: either when the key is past the "on" position which would engage another terminal on the back of the ignition switch, or from a wire that goes through an oil pressure sensor - when (and only when) you have oil pressure it completes that circuit and powers the pump.
This is a safety thing. It may be too late to save the engine if the fuel pump is shut off when oil pressure fails since there will be enough fuel to run for quite a while. But in case of accident, the fuel pump will go off and fuel won't be spilling out all over the place. If the fuel pump is running any time the key is "on" then there is no protection against this sort of situation.
|
'75 308 GT4 (Peter)
Advanced Member
Username: Peter
Post Number: 2819
Registered: 12-2000
| | Posted on Friday, June 06, 2003 - 4:13 pm: | |
My method slightly different:
- Turn key to "On" and run fuel pump for about 20-30 sec.
- Crank engine and let it spin a couple of times to get some oil flowing through the bearings.
- While still cranking, I'll touch the throttle and it'll catch and run, if it feels like it'll die, I'll touch the throttle again and feather it a bit.
- I'll let it idle for a few minutes, take off and drive slowly (under 3000RPM) for a few miles until the temp gauges wake up.
|
Terry L (Terrykarr)
Junior Member
Username: Terrykarr
Post Number: 144
Registered: 12-2002
| | Posted on Friday, June 06, 2003 - 1:16 pm: | |
When you turn the switch on the fuel pump comes on. |
rich (Dino2400)
Junior Member
Username: Dino2400
Post Number: 247
Registered: 10-2001
| | Posted on Friday, June 06, 2003 - 11:29 am: | |
Does the fuel pump run when the key is in the "on" position or do you have to hold it slightly past "on" but not yet to "crank" to run the fuel pump?
I'm assuming the later because if the fuel pump runs in the "on" position that would seem to defeat the low oil pressure fuel pump cut off (which I assume the ferrari Dinos have since even my Fiat Dino had it). |
david handa (Davehanda)
Member
Username: Davehanda
Post Number: 922
Registered: 5-2001
| | Posted on Friday, June 06, 2003 - 10:09 am: | |
Terry,
It doesn't matter, whatever it takes to keep it from dying, while not racing the engine.
I did like Mitchell, but tried to let it warm for a minute or two, then drive off... |
Terry L (Terrykarr)
Junior Member
Username: Terrykarr
Post Number: 143
Registered: 12-2002
| | Posted on Friday, June 06, 2003 - 9:42 am: | |
After pumping the gas, do you keep a part throttle and then feather back or no throttle and feather up? |
"The Don" (Mlemus)
Senior Member
Username: Mlemus
Post Number: 5150
Registered: 8-2002
| | Posted on Friday, June 06, 2003 - 9:28 am: | |
Mine is the same except I warm it up for 5 minutes before I drive it. |
Mitchell Le (Yelcab1)
Member
Username: Yelcab1
Post Number: 544
Registered: 11-2001
| | Posted on Friday, June 06, 2003 - 9:24 am: | |
For me, in sunny california.
1. get in, turn the key to on for 15 seconds
2. pump the gas 2-3 times
3. No choke, it is disconnected
4. crank the key to start, feather the gas a bit
5. Within 10 seconds, idle is fine, back it out of the garage, into the street,
6. Drive it off slowly in 1 and 2 gear until engine warms up.
That is my story and I am sticking with it. |
Terry L (Terrykarr)
Junior Member
Username: Terrykarr
Post Number: 142
Registered: 12-2002
| | Posted on Friday, June 06, 2003 - 8:27 am: | |
I know this was discussed a while back [no luck finding the archive], but I do remember some of you discussing your method for cranking these carbureted cars when cold and when hot. Was wondering if any of you would like to elaborate on this again for me? |