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+--- Thread: CM2250/CM2350 Fuel Pump (/showthread.php?tid=4518)
RE: CM2250/CM2350 Fuel Pump - Ironsled - 08-25-2019
I spent right at $1600 for the head assembly when I went through my repair back when I started this thread
the Guts off my fuel pump was not my issues but one side of the head was . one plunger would not return like it calls for in the manual. as I would press it down and release it would not fully return back to the proper place and every time I pushed it down it ended up getting shorter and shorter meaning that a check valve for that plunger was not working correctly and as i could have got the parts one by one and changed them out in my situation it was not a option
I did attempt to loosen the torx nut for the check valve and yea that was not coming out and broke my bit and it wasn't a cheap tool so my opinion on that if one is doing these repairs and can afford I would only replace the head assembly
unless you have the time and place with a vice and other necessary tools to be able to do it right .
RE: CM2250/CM2350 Fuel Pump - Tanker93 - 08-28-2019
Ive never seen/heard about this fuel pump issue in Australia.. pretty sure we never got the ceramic plungers for a start but havent blokes still had dramas with the upgraded ones?
RE: CM2250/CM2350 Fuel Pump - Rawze - 08-28-2019
(08-28-2019 )Tanker93 Wrote: Ive never seen/heard about this fuel pump issue in Australia.. pretty sure we never got the ceramic plungers for a start but havent blokes still had dramas with the upgraded ones?
yes, the upgraded pumps are just as bad. Only difference is that they last a few more days before destroying the entire engine.
here is one example: http://rawze.com/forums/showthread.php?tid=1805&pid=15389#pid15389
RE: CM2250/CM2350 Fuel Pump - Tanker93 - 08-28-2019
Still scratching my head as to why its an issue over there yet it isnt here. You lot would out number us probably 100-1 on how many of these engines are getting around but still... Can only hope people here are aware that the day that pump fails, it wont be a straight forward fix.
RE: CM2250/CM2350 Fuel Pump - Rawze - 08-28-2019
(08-28-2019 )Tanker93 Wrote: Still scratching my head as to why its an issue over there yet it isnt here. You lot would out number us probably 100-1 on how many of these engines are getting around but still... Can only hope people here are aware that the day that pump fails, it wont be a straight forward fix.
Just because you have not seen it, does not mean the problem does not exist. - It very well does, and is nothing to play around with!.
RE: CM2250/CM2350 Fuel Pump - Tanker93 - 08-28-2019
Trust me, ive being paying attention to this problem on here for a very long time and dont doubt it.. thought that throwing the observation out there might've lead to somebody on this end telling me otherwise.
RE: CM2250/CM2350 Fuel Pump - hhow55 - 08-28-2019
https://www.cnet.com/roadshow/news/gm-lawsuit-pickups-us-diesel-fuel/
Maybe root cause.
RE: CM2250/CM2350 Fuel Pump - Tanker93 - 08-28-2019
(08-28-2019 )hhow55 Wrote: https://www.cnet.com/roadshow/news/gm-lawsuit-pickups-us-diesel-fuel/
Maybe root cause.
Pretty much been my only suspicion this whole time. Didnt know other common rail systems were having the same issue though. They have been around a long time
RE: CM2250/CM2350 Fuel Pump - Soulreaver0102 - 08-28-2019
I’m not real familiar with these pumps but ours is oil lubed correct. So it wouldn’t matter about thin fuel cause that’s not what’s lubing it correct?