Question about 2005 Buick LaCrosse

1 Answer

Why my car never start on the first try?

When the engine is hot I do not have the problem!

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  • A Bellan
    A Bellan Oct 30, 2012

    What is the main cause? battery, fuel filter, spark plugs, starter, fuel injection ect...

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  • 444 Answers

Tune it up, Some cars are just that way as they age,

Posted on Oct 30, 2012

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1 Answer

Jeep will start and run then after you shut it off it will not start ?


NO start, but cranks ok ! (guessing i am on that cranking bit...)
no engine size stated, so cant be ACCURATE.
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so when hot it fails, and when hot that is when we try to fix it or diagnose it.. not cold.
so got spark on all unstated engine cylinders?
all must work not just one
ever get a full tuneup this decade or even ever?
when it dont start, did you read the oper guide.
and do the wide open throttle , cranking, and see IF the engine unfloods? (this is feature on all EFI cars).

all cars do this ignored, all do.
service it? ever?

if spark is good, try test fuel.
if test fuel works for 3seconds, or starts and runs hot, say so now?
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if soaking, , its flooded,
if flooding it is, we work flooding
ask.how, (can be many reasons. more tests... )
like that....

i offer only one guess, on all cars, all cars ignored!!
eva get a tuneup?

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Peugot 307 1.6 semi automatic keeps blowing F8 engine box fuse when I try and start the engine while it's still hot


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My Toyota Carina 2 heats up to the middle and when i stop the engine it won't start again until it's cooled. I've tried changing the fuel pump but the problem remained the same. please help


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Will not start on hot day's in the sun.[engine cranks normal]


The normal reason why a hot engine doesn't start is the choke. Your fancy new range rover will have a computer controlled choke that will be activiated by a temperature sensor. maybe this has failed or is disconnected
In my ancient range rover I have a manual choke but essentially the same engine. I know that if the motor is hot I can't start it with the choke on.
The way the choke works is it restricts the airflow into the engine so that there is a richer fuel / air mixture which is needed for a cold start. If the engine is hot and the choke comes on the engiine floods with petrol and there isn't enough oxygen for it too ignite in the cylinders. To start a flooded engine you have to open the choke and crank the motor without pressing the accelerator. This pumps out the petrol vapour and eventually it will fire and start. If the computer thinks it is cold because of a disconnected or faulty sensor it will put on the choke whenever you try and start and the engine will flood.
I think a vapour lock is unlikely unless you driving in extremely hot weather (above 40 degrees celsius).

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1. How many miles on your car?

2. Is the engine hot, when you try to start the car?

3. Is the engine hot, when you heared the knock noise?

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