Help help help truck wont start after 4wheeling

[jgpoirier]

This weekend went out camping and did a bit of wheeling through some trails and such. Truck worked great friday and saturday, went to start the truck to attach the trailer and it wont start. Can smell fuel, pulled the spark plug on the #1 but dont see spark. You can hear the starter turning and when I try to boost off of another vehicle it sputters a little bit, but just won't start. Looking in the intake box there is a little bit of water sitting in the bottom but not much at all. The filter isn't wet, so I am hoping like hell that I didn't hydrolock the motor.

Any suggestions?

Thanks,

Guy

[jgpoirier]

Forgot to mention that its a 2000 Dodge Durango SLT
with a 4.7 Magnum.

[DEEZLPWR]

did you do a water crossing? might be condensation in the cap/rotor.

[jgpoirier]

Yes a bit of a water crossing, up to the bottom of my grill. But the weird thing about the 47 is that that motor does not use a dizzy so that has me all confused.

[chasespeed]

Okay... get your trusty can of WD40.....

Pull all connections involving the ignition, one at a time, and spray them with WD40, or, CL220(if you can find that). and give it a whirl. THEN, add dielectric grease to as many electrical connections as you can.

I am NOT a fan of WD40.. but, for this, it works pretty good....

If that doesnt work, check your cam position sensors, and/or crankshaft position sensor....

Chase

[DEEZLPWR]

Yes a bit of a water crossing, up to the bottom of my grill. But the weird thing about the 47 is that that motor does not use a dizzy so that has me all confused.


ahh ok didnt know that. hmmm...

[shortbus4x4]

Make sure you have a good battery and connections. I have seen so many times where a no start is caused by a bad battery or connections. It will crank ok but won't start. These newer computer controlled vehicles need enough voltage to run the ecm or no start. I like seeing at least 10.8 volts on the battery while cranking. Watch the tach if your truck has one while cranking for a few seconds, if it moves that means you have a crank signal off the crank sensor usually. Also listen for the fuel pump when you first turn the key on, you might have to have a helper put there ear to the fuel filler and they should hear a buzzing sound from the fuel tank. If the ecm is in the engine compartment like the big dodges try unplugging the connectors one at a time and look for water or gunk, a lot of times just plugging them back in while fix any connection problem. If your sparkplugs were wet with fuel try drying them out before you crank on it any more. I have also seen where worn plugs, cold morning, bad gas will cause a no start.

[jgpoirier]

Well I took the day off today so I'm going out with my liberty, a new battery, and new spark plugs cause yesterday the gap seemed quite large. I do believe the crank sensor is good because when it does almost turn over my rpm will move. Well hopefully I can get er going before long.

Thanks for the help fellows, I'll let you know if it works,

Guy

[jgpoirier]

We think that we have determined that I did suck some water in and that over night it probably settled inside the motor and it's getting close to starting. But the water I was in of course, wasn't perfectly clean in fact it was quite muddy. Im starting to love how when the mud dries it will act like sand paper and wreck my cylinder walls and eventually i'll lose compression. But I'm hoping like hell it aint that bad.

Guy

[rob845]

Did you suck water into the cat? if it is plugged the truck will not start....

Also to check spark it needs to be grounded or inside the head, its best to check with a spark tester. Or pull the plug and place the tip on metal...

[jgpoirier]

Just to inform anyone that might have cared. But i did lose the engine. The water had cause one piston to seize overnight, when I cranked the motor over I snapped one of three timing chains on the 4.7. Thus i eneded up smacking almost half the valves, and the cylinder walls were toast. I sold the truck and the guy who purchased it has since then dropped a 12 valve cummins into it.

Guy

[lllateralus]

WOW.. that is interesting. The truck ran fine until you parked it the night before?

[ColoradoBill]

Check the ASD relay. To check just switch it with the A/C relay and see if it starts.
The ASD relay is very common, I always have an spare in the glove box.

[ExpoMike]

Check the ASD relay. To check just switch it with the A/C relay and see if it starts.
The ASD relay is very common, I always have an spare in the glove box.

Guess you didn't read all the posts did ya... :costumed-smiley-007

Here is what the OP said what happened,

"Just to inform anyone that might have cared. But i did lose the engine. The water had cause one piston to seize overnight, when I cranked the motor over I snapped one of three timing chains on the 4.7. Thus i eneded up smacking almost half the valves, and the cylinder walls were toast. I sold the truck and the guy who purchased it has since then dropped a 12 valve cummins into it."

I doubt it was a relay based on his info... :ylsmoke:

[ColoradoBill]

Guess you didn't read all the posts did ya... :costumed-smiley-007

Here is what the OP said what happened,

"Just to inform anyone that might have cared. But i did lose the engine. The water had cause one piston to seize overnight, when I cranked the motor over I snapped one of three timing chains on the 4.7. Thus i eneded up smacking almost half the valves, and the cylinder walls were toast. I sold the truck and the guy who purchased it has since then dropped a 12 valve cummins into it."

I doubt it was a relay based on his info... :ylsmoke:

Guess I missed that last post. But my info is still good to know if anyone else has a fuel injected Chrysler vehicle that won't start!

Thanks for pointing out my mistake, I will be more careful so you won't have to correct me again.

[ExpoMike]

No worries man. :D Just figured it wasn't going to help this guy any. LOL

Good info for others who might run into the no start issue.

[DoMiNiC1]

I sold the truck and the guy who purchased it has since then dropped a 12 valve cummins into it.

So now would be a good time to buy it back from him.:ylsmoke:

[Fireman78]

Okay... get your trusty can of WD40.....

Pull all connections involving the ignition, one at a time, and spray them with WD40, or, CL220(if you can find that). and give it a whirl. THEN, add dielectric grease to as many electrical connections as you can.

I am NOT a fan of WD40.. but, for this, it works pretty good....

If that doesnt work, check your cam position sensors, and/or crankshaft position sensor....

Chase

A bit of trivia... the WD in WD40 means "Water Displacement". Developed for missle silo use originally. One of the useless things I keep in my head for some reason. Here is a link if you are interested. http://factsbuffet.com/facts/what-does-wd-40-stand-for Sorry to hear about the truck..

[wrigh003]

You guys must move faster than I do. From wheeling with a water crossing to sold and engine swapped in 8 days? That's fast.

[ExpoMike]

You guys must move faster than I do. From wheeling with a water crossing to sold and engine swapped in 8 days? That's fast.

:hehe::hehe: Look at the dates of the posts... they are almost a year a part. :elkgrin:

I agree, 8 days would be some record for that type of engine swap. :Wow1:

[bfdiesel]

I wish it would only take one day and cost a dollar. :)

[4671 Hybrid]

Just to inform anyone that might have cared. But i did lose the engine. The water had cause one piston to seize overnight, when I cranked the motor over I snapped one of three timing chains on the 4.7. Thus i eneded up smacking almost half the valves, and the cylinder walls were toast. I sold the truck and the guy who purchased it has since then dropped a 12 valve cummins into it.

Guy

I'm not doubting you but I'm wondering how this is possible. If the engine ran when you went through the crossing and ran great after, then there wouldn't be any water in the cylinders to hydrolock the motor. I could see if you started it up afterwards and then it suddenly stopped, that would make me think that there might've been water in the intake box and when you restarted the engine it sucked some in. But since that didn't happen, I'm stumped how it ran great afterwards and then wouldn't start the next day?

And three timing chains? What a nightmare...

[jgpoirier]

I think that over night the water that was in the IM and the intake itself may have settled inside the engine or atleast into the intake ports on the head. Lately I have been losing my mind wishing I still had the Durango:( oh well I guess, time for a new build, getting tired of wrenching on Hondas and not being able to wheel.

[jgpoirier]

:hehe::hehe: Look at the dates of the posts... they are almost a year a part. :elkgrin:

I agree, 8 days would be some record for that type of engine swap. :Wow1:

This is funny, now before you say anything :p but in my Hondas my buddy and I together can do a full drivetrain swap, out, in and running in less than six hours. But then again it is a Honda. If only they werent cheap and stupid fun to drive. haha