starting troubles!
07-24-2002, 01:57 AM
#1
4th Gear
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Join Date: Jul 2001
Location: Saskatoon
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starting troubles!
i have a 1977 911S. iT WILL NOT START WHEN WARM, BUT WITH A SLIGHT TWIST..
Here is my siuation:
My car has trouble starting when it is warm AND HAS SIT FOR LONGER THAN 2 MINS. BUT LESS THAN 40 MIN.(approximately)
just to clarify:
(THE ENGINE ALWAYS TURNS OVER,MY INSTINCT SAY THE PROBLEM IS FUEL DELIVERY RELATED)
I usually only start it once every couple days. when i do this it starts great, the engine barely has to turn over.
If i turn the car off and wait less than 2 minutes it will start , with very few rotations.
WHEN THE PROLEMS OCCURS AND THE CAR DOES NOT START IN A COUPLE SECONDS I KNOW THAT IT WILL TAKE APPROX 30 SECONDS OF THE ENGINE ROTATIONG. THEN THE CAR FIRES UP, IDLES RUFF FOR 10 SECONDS AND RUNS GREAT. iT ALSO BLOWS A VERY SLIGHT BIT OF LIGHT BLACK SMOKEUPON START UP.
THANKS IN ADVANCE FOR ANY RESPONSES.
<img src="graemlins/yltype.gif" border="0" alt="[typing]" />
Here is my siuation:
My car has trouble starting when it is warm AND HAS SIT FOR LONGER THAN 2 MINS. BUT LESS THAN 40 MIN.(approximately)
just to clarify:
(THE ENGINE ALWAYS TURNS OVER,MY INSTINCT SAY THE PROBLEM IS FUEL DELIVERY RELATED)
I usually only start it once every couple days. when i do this it starts great, the engine barely has to turn over.
If i turn the car off and wait less than 2 minutes it will start , with very few rotations.
WHEN THE PROLEMS OCCURS AND THE CAR DOES NOT START IN A COUPLE SECONDS I KNOW THAT IT WILL TAKE APPROX 30 SECONDS OF THE ENGINE ROTATIONG. THEN THE CAR FIRES UP, IDLES RUFF FOR 10 SECONDS AND RUNS GREAT. iT ALSO BLOWS A VERY SLIGHT BIT OF LIGHT BLACK SMOKEUPON START UP.
THANKS IN ADVANCE FOR ANY RESPONSES.
<img src="graemlins/yltype.gif" border="0" alt="[typing]" />
07-24-2002, 04:24 AM
#2
Race Car
Check for a leaky injector. The hard start and black smoke is indicative of a leaky injector as it weeps fuel in to the combustion chamber(s) at rest and makes for a difficult startup.
The other issue is the opposite side of the spectrum. While most CIS injected 911s blow a bit of black smoke upon startup, this wouldn't be of concern to me as your problem may be Fuel Distributor related. Several times during ownership of my CIS injected SC, I found that the plunger in my Fuel Distributor was "stuck" in the upward position, allowing NO -or- little fuel to enter the engine during startup...it only did this when hot.
If you are not "CIS savvy", I would suggest talking to a person that is...maybe someone in your region that is willing to lend you a hand. Otherwise order the Bosch CIS book from Performance Products and read about the various conditions that could affect your hot starts...it's a good read and will leave even the average mechanically inclined person a bit enlightened when finished.
The other issue is the opposite side of the spectrum. While most CIS injected 911s blow a bit of black smoke upon startup, this wouldn't be of concern to me as your problem may be Fuel Distributor related. Several times during ownership of my CIS injected SC, I found that the plunger in my Fuel Distributor was "stuck" in the upward position, allowing NO -or- little fuel to enter the engine during startup...it only did this when hot.
If you are not "CIS savvy", I would suggest talking to a person that is...maybe someone in your region that is willing to lend you a hand. Otherwise order the Bosch CIS book from Performance Products and read about the various conditions that could affect your hot starts...it's a good read and will leave even the average mechanically inclined person a bit enlightened when finished.