99 Spark, Fuel, Crank! No start!!
Thread Starter
Member
Joined: Jul 2012
Posts: 115
Likes: 0
From: Albuquerque, New Mexico
Year: 1999
Model: Cherokee
Engine: 4.0L Inline 6
Ok, I'll detail in full what is going on.
The other day I was wheeling when my radiator cap blew of and soaked the entire engine bay. I was able to restore the cap, get out of the area and back onto a road. When I got to the road, however, the jeep was making a clicking sound that was consistent with the rpms. The main problem was that when I would slow to a stop, the engine would die and I would have lots of trouble getting the engine to start again. After it died the final time, I jumped it and was able to barely make it home. Now, the car will turn over but it won't even come close to starting. The crank is EXTREMELY slow and all of my gauges go up and down while I am cranking. The lights dim and brighten, flash, etc. I've tried two different batteries with the same result. I've check for spark and I have it. I've released the fuel rail pressure, depressed the pressure release and cranked the engine to check fuel pressure. Fuel comes squirting out of the release, I know I have some amount of fuel pressure.
I've also tested all of my relays and fuses... All are good. Also, when I am cranking the engine, it seems to repeat a certain pattern. It cranks moderately fast, then slow. And sometimes it adds a little sputter at the end of the pattern as if a cylinder is firing or something. The ground connection to the body of the jeep seems all good. I'm not quite sure where the ground connect to the engine is... Also, I've noticed a pretty substantial leak coming from the oil filter. The starter is wet with oil and the bottom of the oil filter has drips of oil coming from it. The engine is cranking though so I don't know if it is the starter or not...
There you go! I've given all of the information I know about what is going on.
I hope somebody can help me out with this, I'm depressed without my jeep
The other day I was wheeling when my radiator cap blew of and soaked the entire engine bay. I was able to restore the cap, get out of the area and back onto a road. When I got to the road, however, the jeep was making a clicking sound that was consistent with the rpms. The main problem was that when I would slow to a stop, the engine would die and I would have lots of trouble getting the engine to start again. After it died the final time, I jumped it and was able to barely make it home. Now, the car will turn over but it won't even come close to starting. The crank is EXTREMELY slow and all of my gauges go up and down while I am cranking. The lights dim and brighten, flash, etc. I've tried two different batteries with the same result. I've check for spark and I have it. I've released the fuel rail pressure, depressed the pressure release and cranked the engine to check fuel pressure. Fuel comes squirting out of the release, I know I have some amount of fuel pressure.
I've also tested all of my relays and fuses... All are good. Also, when I am cranking the engine, it seems to repeat a certain pattern. It cranks moderately fast, then slow. And sometimes it adds a little sputter at the end of the pattern as if a cylinder is firing or something. The ground connection to the body of the jeep seems all good. I'm not quite sure where the ground connect to the engine is... Also, I've noticed a pretty substantial leak coming from the oil filter. The starter is wet with oil and the bottom of the oil filter has drips of oil coming from it. The engine is cranking though so I don't know if it is the starter or not...
There you go! I've given all of the information I know about what is going on.
I hope somebody can help me out with this, I'm depressed without my jeep
Thread Starter
Member
Joined: Jul 2012
Posts: 115
Likes: 0
From: Albuquerque, New Mexico
Year: 1999
Model: Cherokee
Engine: 4.0L Inline 6
CF Veteran
Joined: Sep 2011
Posts: 4,172
Likes: 4
From: Riviera, Texas
Year: 1998 Sport
Model: Cherokee
Engine: 4.0
I know you said you had spark. But is it a strong blue spark? Also you need to check your fuel pressure with a mechanical pressure gauge. Just because you have fuel in the rail doesn't mean that it is enough pressure. Also did you check under the dist cap to see if it has water in it. Just a few thing to start checking.
well you cant figure out your problem by guessing!
time to get a fuel pressure gauge check the pressure in PSI, not in "it looks ok" haha.
Compression test all 6, takes all of 15minutes
Cant tell you what to fix if we dont know whats broken
time to get a fuel pressure gauge check the pressure in PSI, not in "it looks ok" haha.
Compression test all 6, takes all of 15minutes
Cant tell you what to fix if we dont know whats broken
Thread Starter
Member
Joined: Jul 2012
Posts: 115
Likes: 0
From: Albuquerque, New Mexico
Year: 1999
Model: Cherokee
Engine: 4.0L Inline 6
I know you said you had spark. But is it a strong blue spark? Also you need to check your fuel pressure with a mechanical pressure gauge. Just because you have fuel in the rail doesn't mean that it is enough pressure. Also did you check under the dist cap to see if it has water in it. Just a few thing to start checking.
Thread Starter
Member
Joined: Jul 2012
Posts: 115
Likes: 0
From: Albuquerque, New Mexico
Year: 1999
Model: Cherokee
Engine: 4.0L Inline 6
Ok I'll pick up a pressure gauge. Also, I'm relatively new to this... How should I test the compression?
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CF Veteran
Joined: Sep 2011
Posts: 4,172
Likes: 4
From: Riviera, Texas
Year: 1998 Sport
Model: Cherokee
Engine: 4.0
You can use one from all most any parts store such as Auto Zone, Advanced or any of those big chain stores.
you ran the vehicle hot basically until it shut off. I'd guess you have little or no compression in one or more cyls. gasket or head itself
engine might be hard to crank due to being on the verge of locked up. heat kills. this isn't an unknown fact.
engine might be hard to crank due to being on the verge of locked up. heat kills. this isn't an unknown fact.
Last edited by s346k; Mar 22, 2013 at 08:15 PM.
Thread Starter
Member
Joined: Jul 2012
Posts: 115
Likes: 0
From: Albuquerque, New Mexico
Year: 1999
Model: Cherokee
Engine: 4.0L Inline 6
1: 20lbs
2: 0lbs
3: 0lbs
4: 0lbs
Then I have up.
Am I doing something wrong or is my jeep severely effed?
Help!
thread the insert into the head first by hand, then spin the gauge onto the thread insert.
It might take a few tries.
But you want it to seal on the head otherwise, the spark plug hole is letting out all the pressure..
It might take a few tries.
But you want it to seal on the head otherwise, the spark plug hole is letting out all the pressure..
CF Veteran
Joined: Aug 2010
Posts: 8,357
Likes: 103
From: Canton, MI
Year: 1999
Model: Cherokee
Engine: 4.0
Effed? I would say so.
As they say; Goodnight Gracie.
CF Veteran
Joined: Aug 2011
Posts: 10,489
Likes: 24
From: Nor-Cal Coast
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
Agreed sounds pretty done. (assuming you had the tester on right). You can just put your finger on one of those "Zero's", and verify there is zip. That being the case you could learn allot about wrenching if you pull the head and "autopsy" it. We love those pics! Sorry Btw, that sucks.
Thread Starter
Member
Joined: Jul 2012
Posts: 115
Likes: 0
From: Albuquerque, New Mexico
Year: 1999
Model: Cherokee
Engine: 4.0L Inline 6
Thread Starter
Member
Joined: Jul 2012
Posts: 115
Likes: 0
From: Albuquerque, New Mexico
Year: 1999
Model: Cherokee
Engine: 4.0L Inline 6
Ok nevermind... The cylinders definitely have compression. I shoved my finger in all of the ones that got zeros and was able to feel the air push out. I think this tester is a POS because it wont give me any readings. Either that or user error... Haha, idk




