smoke knocking and 1093 under load

mainer

New member
Nov 11, 2008
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not my truck thankfully, but a friend has an 05 lly and when you put it under any load it smokes has fuel knock and is storing a 1093 low rail pres code

fpr??
 

DAVe3283

Heavy & Slow
Sep 3, 2009
3,733
305
83
Boise, ID, USA
Yes. That's what I mean. I don't know why it was blowing white smoke, but it was. It was smoking and knocking. Sounded horrible. Put a new WIF sensor on it, and it fixed the problem.
Oh, OK, that makes sense. Lol, I was thinking the WIF electrical was making it do that for some reason... :baby:

Yeah, couldn't hurt to look for air leaks in the system.
 

mainer

New member
Nov 11, 2008
326
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ok so i went and worked on the truck some

when i went to work on it, it wouldnt start, it would just crank, wouldnt make more than 400-500psi rail pressure. so i unplugged the regulator starts right up.

running fine, no smoke/ knocking, warm it up and balance rates are fine but cylinder 2 is 10-11+ in drive and 7-8 in park.

fuel pressure is fluctuating some like 4900-5200 at idle

so did the injector stick open and make it not want to start and by unplugging the regulator it forced enough pressure to shut the injector and start?

it seems to me it needs an injector regardless and then see if possibly fpr at that point?