Question about 1987 Jeep Comanche

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Having trouble with cold cranking and fires right up with starting fluid

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Sounds like your choke is not working

Posted on Apr 03, 2011

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Cranks, no start on 97 GMC van with 350 Vortec. Fired up with starter fluid


if it starts with starter fluid then its a fuel problem. check the fuel pressure and volume with a gage. these require at least 56lbs pressure to open the injectors and if the pressure is at 52lbs the they will not open. these use the pressure to open the poppet injectors and have a problem with the spider lines cracking and leaking fuel inside the intake. this is probably why it won`t start on its own.

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Why wont my 2011 jeep grand cherokee wont start


Okay, the possibilities are great. need to narrow it down a little.
If it fails to crank over it is likely the battery.
If it cranks over ok, but fails to start it is either lack of fuel or lack of spark.
the Quickest way to identify lack of fuel or lack of spark is to spray in a 2 second dose of starting fluid into the air intake. If it fires up then dies in this test it is lack of fuel most common suspect is fuel pump relay or fuel pump.
If it fails to fire up on the starting fluid test it is lack of spark. Electronic ignition trouble shoot procedure from your shop manual for your VIN number will be required.

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1 Answer

I'm still having trouble with my old truck. It cranks over but is hard fireing when cold, and cranks but does not fire at all when warmed up.


I doubt it.
Sounds more like a weak spark or fuel problems.
Have you tried using starting fluid, and can you verify a strong spark at the plugs ?

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Mine 96 cobra starts great in warm weather ,let it get 40 or below it will turn over and over,never gets fuel to fire it up,hit it with starting fluid in air flter it fires right up,,what could be the...


There's a shutter valve to restrict air flow either before or after the air filter housing. In cold winter, this valve is closed as you start up the engine. As the engine area warms up, the shutter valve opens up to allow more air to flow into the intake manifold. In close position, the restriction in air flow results in rich fuel mixture. When its open, the fuel mixture is leaner. If it were locked in open position, you crank the cold engine and you get a lean mixture instead of a rich mixture to start up in cold mornings.

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2001 Silverado 1500 5.3 won't start. replaced fuel regulator, pump, crank sensor. I have spark, engine fires once, then nothing... Fuel pressure shows 50psi with key on...


Does it try to start by using starting fluid in the intake ?
I'm fairly sure fuel pressure should be 55-65 psi so 50 may be low.
Do you loose spark as the engine is cranking ?
Any trouble codes stored in the computer ?

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T10 blazer hard to start when cold,easy to start when hot


4.3L V6 CPI - center port fuel injection . you need 62 psi .When cold give it a shot of carb.cleaner or starting fluid ! does it start then ?

415-455 kPa (60-66 psi

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99 Land Cruiser,sometimes crank but doesent start ,when you park


Next time it does this have a can of starting fluid around and spray it into the intake of the engine, if the engine fires right up you miost likely have a fuel pump problem.

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2001 Jeep Grand Cherokee 4.7L crank no start


easy trouble shoot easy fix ! check to see if its getting fire if not replace the crank sensor it will fire right up common problem with the jeeps . Hope this helps you out !!!

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96 960 cold start problem


take it to a volvo dealer and have the codes read
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