Wednesday, July 4, 2012

Vehicle Cranks Fast but Won't Start

2006 Jeep Liberty Limited will not start,it just cranks fast without actually firing up to start.
This problem is not continuous,its intermittent.Once it starts,it runs fine without any loos of power or performance.

There is No check engine light on dash or any other error code stored in engine module.

WHAT CAN CAUSE THIS PROBLEM?

It sounds like there is a fuel pressure bleedoff problem, not uncommon on these vehicles. There were problems with the fuel filter mount/primer assembly that would allow fuel to bleed back out of the line and back into the tank while sitting without the engine running.

OK,WHY IT JUST GIVE FAST CRANKING BUT NOT START?

When you go to restart the engine then there isn't enough fuel in the system to create enough pressure to turn the injectors on, so you get nothing but cranking.Because fuel is not reaching the injectors to get the vehicle started.

IS THERE ANY QUICK WAY TO SOLVE THIS PROBLEM?

YES,due to this problem very commonly noticed by other users too there was revised filter mount released to prevent the problem.
So when next time these problem occurs, if you are able to you might try priming the fuel system by hand and see if it will then start.
HOW TO DO THIS FUEL SYSTEM PRIMING?

Its easy,try this procedure.
Pump the primer until it gets hard and then try to start the engine to see if it starts easier. If the primer won't get hard then you do have air in the system. If that's the case then you can use the bleeder screw on the filter mount along with the primer handle to bleed the air out and it should start pretty quickly.

OK,IF I NOTICE FUEL BLEEDING OFF THEN?

That's good.Its indication of issue with filter.If you do find that fuel is bleeding off then you'll need to have the revised filter mount installed.That should help to take care of these strange but common  issue.


ANY OTHER OPTION WITHOUT REPLACING THE FILTER?

The best option in these case is getting the old filter replaced,with New Designed filter.That will not let these problem occur.
But at out Auto repair garage 
We've also seen fuel filters on these vibrate loose and cause the same problem. They can loosen enough to be visibly wet on the outside and cause fuel to drain back, but it doesn't cause a large fuel leak and leave puddles. This would be something to check also.But if the Filter looks dry and not loose then get the new designed filter installed.It will Available at your nearest dealer or at local Auto parts store.

This details will help.
Thanks.

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