Hey everyone, I'm new to posting, but I've been reading here for advice for a long time. I have 2 problems, not sure how/if they're related.
Problem 1- Intermittent miss, and occasional stall while driving.
Problem 2- I will try and Post pics of what has happened to my last 3 HPOPs...yes, 3 in a year and a half. The latest was destroyed 2 days after install!
Before I throw another pump in this thing, I want to find out what possible causes would be. I do not have a programmer or chip, I have already done egr delete, blue spring, stc (obviously lol), and it has 4" straight pipe. I have used a Snap On Modis to run contribution tests and injector shutdown tests, as well as everything else this little machine will do, with no tangible results.
Since I can't figure out how to post pics, I will try to describe the pump failure of my last 3 HPOP...which is the exact same.
The rear bushing is pushed out on one side, instead of being flat across...
Anyone that has any insight would be greatly appreciated!
So, what would be possible causes of the Intermittent miss and stall? It feels like it misses all the time actually, and at 1200 RPM I can really feel it, but it feels like it shuts down and starts back up while in motion, then sometimes it will just stall out completely with usually a no start
I have a snap on modis. The only codes it has set were egr related. I have done contribution tests as well as injector shutdown tests and every other test this machine will do...
You can either "go advanced" and upload an image there, or once you have I think 20 posts-ish you can upload to somewhere like FB/Flickr/Photobucket and post the link from there.
I was working on one a little while ago, it turned out that the the internals of the IPr were messed up, it would build up to max high pressure and not release it, the customer put in a hpop and towed it to my shop, same thing it blew the port off the side, he had replaced the IPr with a reman when he first did the pump, it was either a defective regulator, or the too high a pressure is what broke it. Either way I fixed his problem with a new pump and regulator.
Btw I found it by graphing icp pressure pid on my modis so you should be good, I forget what the exact max pressure allowed was, but I think it was somewhere under 3k and this thing had over 3500 at low rpm, but his blew quick
I was able to duty cycle test the IPR with my scanner. I ran it up to 70% and the pump built to 2400-2600. Hopefully the HPOP can handle more than that...I always read 3000 psi..
If it took a while for it to pop you may want to put the modis on record and drive it under different loads, under a good load like going uphill, towing, etc works the system a little more you'll prob see the pressure go up more on the road.
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