Engine cranks but does not start after small accident

Tiny
LUKE100HOLLAND
  • MEMBER
  • 1996 JEEP CHEROKEE
  • 4.0L
  • V6
  • 4WD
  • AUTOMATIC
  • 130,000 MILES
I got into an accident with another car. It busted my grille and radiator, bent the hood and fender. No damage past the radiator, everything under the hood was unharmed. No airbags deployed. But now when I try to start it, it turns over but won't start. I've been told there's no inertia or fuel pump cut off switch on these. All the fuses are good, and the fuel pump is working. Anyone know what could be the problem?
Do you
have the same problem?
Yes
No
Saturday, December 25th, 2021 AT 6:59 AM

12 Replies

Tiny
ASEMASTER6371
  • EXPERT
Good morning,

There is no inertia switch in the model at all. Even if there was, the fact the fuel pump is working tells me it would not be that switch.

You need to check for sparks in the plugs. Let us see if you have a spark.

https://www.2carpros.com/articles/how-to-test-an-ignition-system

https://www.2carpros.com/articles/car-cranks-but-wont-start

Please get back to me with the results.

Roy

Was this
answer
helpful?
Yes
No
Saturday, December 25th, 2021 AT 7:58 AM
Tiny
LUKE100HOLLAND
  • MEMBER
There is spark in the plugs. It turns over where it sounds like it's right there at starting but won't go all the way.
Was this
answer
helpful?
Yes
No
Saturday, December 25th, 2021 AT 8:18 AM
Tiny
ASEMASTER6371
  • EXPERT
Try holding the gas pedal to the floor while cranking. It may be flooded with fuel.

Roy
Was this
answer
helpful?
Yes
No
Saturday, December 25th, 2021 AT 8:25 AM
Tiny
LUKE100HOLLAND
  • MEMBER
I've tried that too.
Was this
answer
helpful?
Yes
No
Saturday, December 25th, 2021 AT 8:37 AM
Tiny
ASEMASTER6371
  • EXPERT
Okay, check the actual fuel pressure. You can rent a tester at a parts store and let us see what the actual pressure is.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Engine at idle speed .................... 338 kPa 14 kPa (49.0 psi 2 psi).

Roy
Was this
answer
helpful?
Yes
No
Saturday, December 25th, 2021 AT 8:42 AM
Tiny
LUKE100HOLLAND
  • MEMBER
The fuel pressure is fine, new pump, new filter, and new injectors. It ran great before the accident.
Was this
answer
helpful?
Yes
No
Saturday, December 25th, 2021 AT 8:51 AM
Tiny
ASEMASTER6371
  • EXPERT
Okay that was then, and this is now. You need to start somewhere, and I would start there.

It needs to be verified before moving on to the next step.

Roy
Was this
answer
helpful?
Yes
No
Saturday, December 25th, 2021 AT 11:32 AM
Tiny
LUKE100HOLLAND
  • MEMBER
Anyone else have a suggestion. I've tested the fuel pressure prior to this site.
Was this
answer
helpful?
Yes
No
Sunday, December 26th, 2021 AT 5:43 AM
Tiny
ASEMASTER6371
  • EXPERT
Okay, before the accident? What was the pressure?

I am trying to help and there are certain diagnostic tests that need to be done before moving on. You don't know what damage was done in the accident so whatever was done before that still needs to be checked.

Roy
Was this
answer
helpful?
Yes
No
Sunday, December 26th, 2021 AT 6:12 AM
Tiny
LUKE100HOLLAND
  • MEMBER
I don't remember the exact pressure. Aside from that what could it be?
Was this
answer
helpful?
Yes
No
Sunday, December 26th, 2021 AT 6:16 AM
Tiny
ASEMASTER6371
  • EXPERT
It could be a fuel delivery issue, spark control issue, wires, and connectors being jarred apart from the accident. A lot of things and you to start somewhere.

Roy
Was this
answer
helpful?
Yes
No
Sunday, December 26th, 2021 AT 6:28 AM
Tiny
KASEKENNY
  • EXPERT
Just to jump in, I agree that we need to confirm everything and not make any assumptions when a vehicle is involved in an accident.

If the engine is just cranking then this could be one of 4 things, air, fuel, spark, or combustion.

In order to figure out if this is a pinched wire, sensor issue or other issues causing the crank no start, we need to find out what we don't have.

Clearly it is unlikely that this is an air or compression issue, so that means we need to find out if we have fuel pressure and spark. Knowing this info will tell us where to check next as there are only a few reasons for why you would not have them.

Starting with fuel is the best thing to do because it is the most likely issue but if you don't want to check the fuel pressure then we need to pull a spark plug and check for spark.

This could be a crank sensor issue due to a pinched wire but as Roy stated, we need to start somewhere so let's start crossing things off the list and find out what the pressure is today and then if you have spark, and we can make a better decision on what to do next.

Thanks
Was this
answer
helpful?
Yes
No
Sunday, December 26th, 2021 AT 6:08 PM

Please login or register to post a reply.

Sponsored links