Hot start problem
#1
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Hi
There is a problem with hot start. When the car is hot (after driving) it's hard to start engine. Sometimes it takes 10 minutes to start engine.
What could it be?
It's 930 turbo (1986 year)
Thanks in advance
Sergey
There is a problem with hot start. When the car is hot (after driving) it's hard to start engine. Sometimes it takes 10 minutes to start engine.
What could it be?
It's 930 turbo (1986 year)
Thanks in advance
Sergey
#2
Three Wheelin'
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What kind of starting problem? You crank and crank and it doesn't start? When I had my SC I had a similar problem and it turned out to be the fuel accumulator. Have you tried to lift the sensor plate?
#3
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I haven't tried to lift the sensor plate yet
#5
Burning Brakes
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Sounds like a voodoo curse to me ![Big Grin](https://rennlist.com/forums/images/smilies/biggrin.gif)
You could try messing with the air flow sensor plate as suggested (but push it down slightly to send fuel to the injectors, as that's the direction of air flow on a 930. At rest, it's already at it's fully upward position so lifting it won't do anything).
Also, check your spark when she won't hot start. Could be your CDI is showing some problems, maybe getting heat soaked and malfunctioning? Just a thought.
![Big Grin](https://rennlist.com/forums/images/smilies/biggrin.gif)
You could try messing with the air flow sensor plate as suggested (but push it down slightly to send fuel to the injectors, as that's the direction of air flow on a 930. At rest, it's already at it's fully upward position so lifting it won't do anything).
Also, check your spark when she won't hot start. Could be your CDI is showing some problems, maybe getting heat soaked and malfunctioning? Just a thought.
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#8
Burning Brakes
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#10
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I haven't bought this car yet. In several days will go to other town to take the car
))
I found out some more details about this car hot start problem.
There is no problem with hot start if crank at once after turning off the engine. Also there is no problem if passed several hours. And if crank after 5-10 minutes etc after turning off the engine sometimes it takes 10 attempts to start the engine.
And also the injectors were changed. It didn't help.
![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
I found out some more details about this car hot start problem.
There is no problem with hot start if crank at once after turning off the engine. Also there is no problem if passed several hours. And if crank after 5-10 minutes etc after turning off the engine sometimes it takes 10 attempts to start the engine.
And also the injectors were changed. It didn't help.
#11
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When mine did the same thing it was due to the WUR settings causing a lean condition.
I believe the heat soak in the engine caused the WUR to remain in the Warm CP settings and that was a bit too lean for a restart with no remaining fuel pressure.
Like Mark suggested, push down on the Air Flow Plate a little while trying to start [in your no-start conditions] and if it starts right up, your too lean...
I believe the heat soak in the engine caused the WUR to remain in the Warm CP settings and that was a bit too lean for a restart with no remaining fuel pressure.
Like Mark suggested, push down on the Air Flow Plate a little while trying to start [in your no-start conditions] and if it starts right up, your too lean...
Last edited by mooney265; 02-16-2013 at 12:58 PM.
#13
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You could be looking at a fuel accumulator: $250 for Part. But, you won't know until you stick the CIS gauges on it...
A quick read with pictures of the gauge: http://forums.pelicanparts.com/porsc...questions.html
#14
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Sounds good. I was afraid that it could cost about 4.000$ or more.
#15
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have you had a PPI done by a reputable shop? that's where you could run into some $$
1. Leaky cylinder[s]
2. Broken head studs
3. Worn syncros in transmission
All of the above require pulling the engine.
1. Leaky cylinder[s]
2. Broken head studs
3. Worn syncros in transmission
All of the above require pulling the engine.