99 grand cherokee 4.0 hard start.
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Model: Cherokee
99 grand cherokee 4.0 hard start.
Just got a 99 grand a few months ago 156k on it runs great. But latly its been getting harder to start. I guess i should say it cranks longer. And getting worse. What could this be?
Thanks
J
Thanks
J
#3
Mine does this as well ... there was a service bulletin out for "long cranking periods" or long cranking times.
There was a series of things to check. Many of which involved the fuel pump. They would lose pressure internally or the seal around them would lose pressure.
I replaced mine b/c a friend said that had to be it. Well, it wasn't. He now is telling me a leaky injector. There is a thread on here somewhere for leaky injectors as well.
Keep digging.
The service bulletin does have a series of leakdown tests at the rail to see if it's losing pressure.
Mine has been doing it for 3 years ... I did the pump 6 months ago. So, hopefully I figure mine out soon as well.
Good Luck if any of that helped.
There was a series of things to check. Many of which involved the fuel pump. They would lose pressure internally or the seal around them would lose pressure.
I replaced mine b/c a friend said that had to be it. Well, it wasn't. He now is telling me a leaky injector. There is a thread on here somewhere for leaky injectors as well.
Keep digging.
The service bulletin does have a series of leakdown tests at the rail to see if it's losing pressure.
Mine has been doing it for 3 years ... I did the pump 6 months ago. So, hopefully I figure mine out soon as well.
Good Luck if any of that helped.
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