Engine noise

Bryce418

Still slow
Oct 5, 2009
611
0
0
Just a heads up +15 means it is having to add fuel on #5. A fuel knock usually but not always has a negative balance rate.
 

duratothemax

<--- slippery roads
Aug 28, 2006
7,139
10
0
Wyoming
oh it def. sounds like rod knock... I drove the truck 30 miles home last night and it got ok then bad again. I'd prefer to not poke holes through my connector but maybe i will have too. I have just started running an 2 part additive IIRC this is the 2nd tank ha

ive had a hole in my connector for 120,000 miles, and 5 years...and I live in a LITTLE harsher climate than you. :)

It will be fine nick. Either that or you can buy the expensive 'repair kit' from the dealer. Basically just includes a new connector with wire on it, and some heat-shrink butt-splice connectors.
 

Bryce418

Still slow
Oct 5, 2009
611
0
0
Nick, Ben and fireman are probably right. The knock is probably an adjacent cylinder in the firing order getting a ton of extra fuel to attempt to even the crank speed. The +15 balance rate means it's adding 15mm of fuel to #5, so translation either a short rod (probably not as it doesn't smoke) or a connection issue.
 

DMAXchris

It’s only temporary!
Apr 28, 2009
2,273
2
38
44
Natrona Heights PA
If you are +15 and its knocking it's stuck closed. Had the same thing happen to me 2 years ago on the way back from Indy. Got bad fuel at a Pilot. One of the Cummins I was with lost all 6 injectors from fuel at the same stop.
 

ChevyDieselLLY

Whats A Budget???
Apr 1, 2008
2,684
1
0
38
MI, NC, now Hawaii
I had to do the ice pick mod to one of my injectors right after I built my motor. Has been fine since but scared the sh!t out of me when it happened. Do you have a CEL. There should be a code if your harrness is messed up.
 

Jscherbs

PIN IT TO WIN IT!!!
Oct 27, 2009
753
0
0
Canton, MI
If you are +15 and its knocking it's stuck closed. Had the same thing happen to me 2 years ago on the way back from Indy. Got bad fuel at a Pilot. One of the Cummins I was with lost all 6 injectors from fuel at the same stop.

i got water in my fuel from a pilot when i first got my truck. gayness!!! hope we learned something.
 

paint94979

Beer Nazi
Sep 18, 2006
11,715
8
38
37
Simon you know my address, go ahead and mail me a cashiers check and ill build it right away :D
 

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
21,845
6,092
113
Phoenix Az
I say short rod. No smoke due to those tiny lly injectors :D :hug:.

Ice pick the damn thing nick! Shesh lol