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Old 09-19-2015, 05:05 PM   #1 (permalink)
DrDriveway
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Help...broken fuel pump push rod

My son has a 1989 GMC one ton with a 6.2. I have replace the lift pump one time before - about a year and a half ago. He has had problems lately with it starting, and it was losing it's prime overnight. We pulled the fuel filter off of the firewall, and I had him turn the engine over. There was very little fuel coming out of the feed line. We got a new lift pump and I proceeded to change it out. I took off the backing plate so I could get the rod completely out. I packed it with grease before I slid the rod back in place. I wrestled the pump back on and tightened it down. Just as I was snugging the bolts up I heard a small snap inside. I hoped the rod didn't come off of the pump lever. We cranked the truck. No fuel pumping. I pulled off the backing plate again. The rod came out with a piece of it broken off. The broken off piece is still in the hole. I bumped the starter just a little to see if it would fall out - it didn't. I put a screw driver tip into the hole and it feels rough, like it might be the broken piece still in there. I wasn't home, so I didn't have all my stuff, like my magnet and mirror. I'm pretty worried now. Anybody else have this happen?

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Old 09-19-2015, 05:23 PM   #2 (permalink)
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depending on how heavy the broken piece is, you can use a shop vac with some pantyhose and suck it out without the vacuum eating it.

I'm not a fan of the mechanical lift pump, and since you have had to swap it out several times, I would switch to an electric fuel pump from a 1993 6.5.

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Old 09-19-2015, 06:04 PM   #3 (permalink)
smackzed
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I wouldn;t run it without getting that piece out that's for sure...but if you couldn't pry it out with a screwdriver then and you don't have a magnet then I'm out if ideas, Happys idea sounds like it might work?
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Old 09-19-2015, 06:19 PM   #4 (permalink)
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Magnet hopefully will get it out..
Usually the dang thing falls out when you're trying to get the pump on
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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 09-19-2015, 06:23 PM   #5 (permalink)
jdf915
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Do what they say go electric.
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And that isn't your every day talent there....
list of db2 pumps and applications. Pump INFO Here's some thing else that's interesting.Gauge Pod
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Old 09-19-2015, 06:26 PM   #6 (permalink)
legendman
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Do what they say go electric.
After you get the piece out....
Wouldn't want whats left floating around in the oil pan...

But yea eliminate a few headaches going with a electric pump.
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What your saying happened, should never be able to happen.
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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
1999 Chevrolet K2500 5.7L Auto
2006 Jetta TDI 5sp
2002 Golf TDi 4dr 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
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Old 09-19-2015, 09:26 PM   #7 (permalink)
Diaric
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I've heard of a few being broke and staying there. Wouldn't be my luck.
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well to make your pump retarded, you could let it hang out with me for a day
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Yeah Diaric, I gotta say, I'm afraid I'm going to have to give you an official warning on that.
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Old 09-19-2015, 09:28 PM   #8 (permalink)
smackzed
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I wouldn't trust it either....cam activated pieces need to stay put in my opinion
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Old 09-19-2015, 10:36 PM   #9 (permalink)
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Youll likely get it out with a magnet its probably like a boot in mud. You may want to go electric or get a new push rod. If you go electric you need a block off plate for a sbc. Youll want to delete the line running from the mechanical pump to the model 80 box filter. If time does not permit you can absolutely just connect the rubber 3/8 hose that was on the suction side of that mechanical pump straight to the 3/8 line by pushing the threaded fitting back a couple inches and installing a couple worm gear clamps. I perfer less line. Heres one example of a Airtex pump, personally i would prefer a 6.5 pump and buying the correct pigtail. and heres the block off plate looks like. I have an extra at home that comes with the bolts but im not home so cant give you that part # right now. Good luck and Welcome to Dieselplace.
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my guess would be shocks
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Even the guys who own them aren't 5.7 guys.
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Old 09-20-2015, 12:23 AM   #10 (permalink)
Jason_726
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Quote:
Originally Posted by DrDriveway View Post
My son has a 1989 GMC one ton with a 6.2. I have replace the lift pump one time before - about a year and a half ago. He has had problems lately with it starting, and it was losing it's prime overnight. We pulled the fuel filter off of the firewall, and I had him turn the engine over. There was very little fuel coming out of the feed line. We got a new lift pump and I proceeded to change it out. I took off the backing plate so I could get the rod completely out. I packed it with grease before I slid the rod back in place. I wrestled the pump back on and tightened it down. Just as I was snugging the bolts up I heard a small snap inside. I hoped the rod didn't come off of the pump lever. We cranked the truck. No fuel pumping. I pulled off the backing plate again. The rod came out with a piece of it broken off. The broken off piece is still in the hole. I bumped the starter just a little to see if it would fall out - it didn't. I put a screw driver tip into the hole and it feels rough, like it might be the broken piece still in there. I wasn't home, so I didn't have all my stuff, like my magnet and mirror. I'm pretty worried now. Anybody else have this happen?
It's happened to me, but not necessarily the same way. I was able to fish out the broken piece with a magnet. It wouldn't reach with the joint at the base of the magnet assembled. So I removed the stick from the magnet and tied some twine around the base of the magnet. Used a screwdriver to help push the magnet all the way in and then pulled the magnet and piece of rod out with the string.

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