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Old 11-08-2019, 02:27 PM   #21 (permalink)
suburbangreaser
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Thanks Legendman. I appreciate your input, and advice.

Where in the heck is Oakdale? I was born in New Haven n grew up in Essex

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Old 11-08-2019, 03:51 PM   #22 (permalink)
suburbangreaser
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Also. It seems like I would have to drop the fuel tank in order to change out the rubber line. It look totally dry,. But probably need replacing.

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Old 11-08-2019, 10:31 PM   #23 (permalink)
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Originally Posted by suburbangreaser View Post
Where in the heck is Oakdale? I was born in New Haven n grew up in Essex

I am about 20 minutes north east of Essex.
Actually worked at Essex Credit back in the day.
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I put a chevrolet tailgate on my last truck and it started acting like a girl...love me, need me, want me pay attention to me. Took it off and put the GMC back on (fixed the latch) and it went back to being the same old dirty bastard it used to be
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Old 11-08-2019, 10:37 PM   #24 (permalink)
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Originally Posted by suburbangreaser View Post
Also. It seems like I would have to drop the fuel tank in order to change out the rubber line. It look totally dry,. But probably need replacing.

It's tight but you can change the line without dropping the tank.


I would do the clear line first, at least then you would get an idea of how bad the leak maybe if there is one. If the clear line is empty of fuel after sitting overnight thats a bad air leak. A little bubble is normal.
You posted one time it seemed ok, was it parked nose down by chance?
Mine would start no problem if it was nose down after sitting over night.
Nose up, it took forever to get running and once it started killing the batteries before it would fire I knew it was time to fix right.

Last time I had to deal with crappy lines I just ran new fuel line back to front.

Dual tanks?
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What your saying happened, should never be able to happen.
Quote:
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I put a chevrolet tailgate on my last truck and it started acting like a girl...love me, need me, want me pay attention to me. Took it off and put the GMC back on (fixed the latch) and it went back to being the same old dirty bastard it used to be
~ Bob
1987 K20 5.7 TBI 700r4 np208
1990 C1500 5.7 700r4 Short stepside
1999 Chevrolet K2500 5.7L Auto
2006 Jetta TDI 5sp

Do yourself a favor and read the 6.2 Diesel Student Training Manual ... lots of good info...it's in PDF format located here >> PDF Manuals

Last edited by legendman; 11-08-2019 at 10:37 PM.
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Old 11-10-2019, 01:39 AM   #25 (permalink)
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Ya a fuel puddle under the intake means pulling the intake cause the line from to the IP could be rotten.


Before you get to hay wire at replacing rubber lines at the tank as that maybe a PITA job for no reason .... I would pressurize the fuel system. 5-8 psi MAX ... and we can walk you through this if you want to try this.


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Old 11-10-2019, 07:28 PM   #26 (permalink)
suburbangreaser
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So I painstakingly replaced the lift pump. Which of course the metal fuel line didn't line up with.

Drove around the hood for 10-15 minutes then drove 40 miles. All fine n dandy.

Got in it today it started decently ran it for a few. About an hour later got in it to go, and was letting it warm up. It surged up, and died. Cranck crank crank for awhile it fired, and died again. I did park it nose up on a slight incline. Should have listened. Lol

It's such a let down. Grrr. Not to mention beig with out wheels...

Next steps.......
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Old 11-10-2019, 07:44 PM   #27 (permalink)
suburbangreaser
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Ok. So I let it sit for a bit.. cranckdc n cranked it fird. I kept the rpm up cause it sounded like it was gonna choke out again. After about 3 minutes I let it go back it stumbled, and then began to lever out. But it would surge at an even cadance.


I went on like that for 5 minutes as I shook rubber fuel line. It evened out a little bit. The I shook the last line from the injector (front driver side) return line(front of IP). It stopped surging. Not sure if coincidence or not.

Ok. Now it is surging again. Shake lines or not.
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Old 11-10-2019, 07:47 PM   #28 (permalink)
suburbangreaser
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Just reved it up again. Very even, and punchy. The surging stopped. Even idle.

Air leak I guess. I replaced all the rubber lines 10 yrs ago with Viton.

I replaced the line from lift pump to Ip in May with lift pump.

Booo.

You say pressure test aye.....
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Old 11-10-2019, 07:57 PM   #29 (permalink)
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It drives, but when letting off gas pedal surges, and kind of wants to stall. It seems fine when gass pedal is applied.

I'm sitting here it was idling with the surge, parked nose downhill, and it evened out. It's fine now at an idle.

Play by play.. lol...
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Old 11-10-2019, 08:01 PM   #30 (permalink)
suburbangreaser
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Ok. Just drove it down a slight decline at an even relaxed rpm, then back up the incline. It seems to run ok. No wanting to cut out.

So air....

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