DUMB Questions here........
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Junior User
Joined: Jun 2008
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I'll be corrected if i'm wrong, but if the truck is stock, i believe the only way you would fry pistons is having oil cooling jet problems.
The fact you say your oil pressure goes all the way up....mabye theres something lodged in there somewhere.
Like I said, get someone to check the oil pressure with a real guage.
I believe the cooling jet nozzles also fall off once in a while, but it seems very rare. (also shouldnt boost oil pressure.)
The fact you say your oil pressure goes all the way up....mabye theres something lodged in there somewhere.
Like I said, get someone to check the oil pressure with a real guage.
I believe the cooling jet nozzles also fall off once in a while, but it seems very rare. (also shouldnt boost oil pressure.)
Also how would you go about checking the oil pressure with a "real gauge"? This vehicle is a 35ft limo coach and nobody will touch it.
Lead Driver
Joined: Jan 2006
Posts: 6,267
Likes: 5
Oh, i see...
The oil jets squirt oil at the pistons to cool them. They rely 100% on oil pressure and have nothing to do with electronics.
So you've basically replaced the block, and heads, and used all the old accessories and electronics?
Does the engine ever run warm???
Get someone to check the radiator that it isnt plugged,
Take the air intake apart and insure that the filter is clean, and theres no crap in the intake system.
Theoretically if the intake were blocked, you could burn a piston because the EGT's would skyrocket.
Same problem if the exhaust were harshly restricted, so check it hasnt been hit by a speedbump or something and got crimped shut.
I wish we had a perfect answer for you, but the more we discuss this the closer you'll get...
The oil jets squirt oil at the pistons to cool them. They rely 100% on oil pressure and have nothing to do with electronics.
So you've basically replaced the block, and heads, and used all the old accessories and electronics?
Does the engine ever run warm???
Get someone to check the radiator that it isnt plugged,
Take the air intake apart and insure that the filter is clean, and theres no crap in the intake system.
Theoretically if the intake were blocked, you could burn a piston because the EGT's would skyrocket.
Same problem if the exhaust were harshly restricted, so check it hasnt been hit by a speedbump or something and got crimped shut.
I wish we had a perfect answer for you, but the more we discuss this the closer you'll get...
Thread Starter
|
Junior User
Joined: Jun 2008
Posts: 82
Likes: 0
Oh, i see...
The oil jets squirt oil at the pistons to cool them. They rely 100% on oil pressure and have nothing to do with electronics.
So you've basically replaced the block, and heads, and used all the old accessories and electronics?
Does the engine ever run warm???
Get someone to check the radiator that it isnt plugged,
Take the air intake apart and insure that the filter is clean, and theres no crap in the intake system.
Theoretically if the intake were blocked, you could burn a piston because the EGT's would skyrocket.
Same problem if the exhaust were harshly restricted, so check it hasnt been hit by a speedbump or something and got crimped shut.
I wish we had a perfect answer for you, but the more we discuss this the closer you'll get...
The oil jets squirt oil at the pistons to cool them. They rely 100% on oil pressure and have nothing to do with electronics.
So you've basically replaced the block, and heads, and used all the old accessories and electronics?
Does the engine ever run warm???
Get someone to check the radiator that it isnt plugged,
Take the air intake apart and insure that the filter is clean, and theres no crap in the intake system.
Theoretically if the intake were blocked, you could burn a piston because the EGT's would skyrocket.
Same problem if the exhaust were harshly restricted, so check it hasnt been hit by a speedbump or something and got crimped shut.
I wish we had a perfect answer for you, but the more we discuss this the closer you'll get...
Hotshot
Joined: Jan 2008
Posts: 13,144
Likes: 11
From: Rochdale MA
Don't run the engine without the air filter!!!! If the turo pulls in any dirt you run the risk of dusting the turbo or ruining the engine. One of our brothers here had a K&N on his truck at some point and that let to the demise of his engine.
Thread Starter
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Junior User
Joined: Jun 2008
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Someone on here posted that they had a similar problem with the gauge and it was a bad oil pressure sending unit. Is that the sensor on the top of the HPOP? My other problem is the hard starting and the clicking noise that happens everytime right before it starts. Others say you are not supposed to hear that.
Post Fiend
Joined: Apr 2004
Posts: 12,835
Likes: 3
From: Silver Lake Dunes, MI
I am sorry i haven't read the whole thread just the first and last page. But did you have the injectors out or HPOP system open? if not you need to runt he van on the road hard for about 20-50 mile and that will work the air out of the HPOP system and it will start faster.
Edit: just read the rest of the thread. you need to run the van down the road and work out the air from having the injectors out. that air is causing low ICP pressures resulting in longer crank times. Once the air is out you are good to go.
Edit: just read the rest of the thread. you need to run the van down the road and work out the air from having the injectors out. that air is causing low ICP pressures resulting in longer crank times. Once the air is out you are good to go.
Lead Driver
Joined: Jan 2006
Posts: 6,267
Likes: 5
There you go, go drive the living crap out of the thing and come back, let us know what transpired.
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Thread Starter
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Junior User
Joined: Jun 2008
Posts: 82
Likes: 0
I am sorry i haven't read the whole thread just the first and last page. But did you have the injectors out or HPOP system open? if not you need to runt he van on the road hard for about 20-50 mile and that will work the air out of the HPOP system and it will start faster.
Edit: just read the rest of the thread. you need to run the van down the road and work out the air from having the injectors out. that air is causing low ICP pressures resulting in longer crank times. Once the air is out you are good to go.
Edit: just read the rest of the thread. you need to run the van down the road and work out the air from having the injectors out. that air is causing low ICP pressures resulting in longer crank times. Once the air is out you are good to go.
It seems to idle smooth and doesn't smoke much but when I drive it it seems to have a real weird throttle response. Is there anyway possible there might be something wrong that might cause damage to anything by running it like this?
Thread Starter
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Junior User
Joined: Jun 2008
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Has anything bad ever happened with that theory of "drive the crap out of it"?
Lead Driver
Joined: Jan 2006
Posts: 6,267
Likes: 5
1. If you change out injectors, i believe some oil will get into the cylinders, and into the exhaust system.
The main things with any engine are temperature, oil pressure, and EGT's. If any of those are not within a reasonable range, stop testing.
***You SHOULDNT have to worry about any of these on a stock functional engine.........
Does it smoke more at starting, or more after driving and warming up???? million $ question ?????
If it smokes more during startup, may be bad glow plugs.
If it smokes more while driving, may be oil in exhaust pipes and turbo housing.
Drive the thing half nice, for a 10 minute trip, and try to get it home once the engine temp guage reads normal.
The main things with any engine are temperature, oil pressure, and EGT's. If any of those are not within a reasonable range, stop testing.
***You SHOULDNT have to worry about any of these on a stock functional engine.........
Does it smoke more at starting, or more after driving and warming up???? million $ question ?????
If it smokes more during startup, may be bad glow plugs.
If it smokes more while driving, may be oil in exhaust pipes and turbo housing.
Drive the thing half nice, for a 10 minute trip, and try to get it home once the engine temp guage reads normal.
Post Fiend
Joined: Apr 2004
Posts: 12,835
Likes: 3
From: Silver Lake Dunes, MI
Smoke for a few miles after injector work is very normal. The oil and fuel in the cylinders and exhaust manifolds burns off. Run it and see where you stand. If you have not put more than 20 miles on the truck after the injector work it needs be run.
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Junior User
Joined: Jun 2008
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I'll go for it..... Anything obvious I should watch out for? I really am just scared that it is dumping oil or too much fuel somewhere somehow and might hydro the engine. Remember I'm a bricklayer, far from a diesel mach. I am forced to change this engine and figure this out cause it is a 35 ft limo coach and an e-350 so nobody will touch it. It also doesn't help any that theres nothing but "part changers" around here.
Post Fiend
Joined: Apr 2004
Posts: 12,835
Likes: 3
From: Silver Lake Dunes, MI
Nothing to look out for really. As long as the engine doesn't turn over hard there should be no issue with hydrolocking. You are past that concern. The smoke should clear after 5 miles or so. Then just drive it for another 15 miles or so and you should be good to go.