Posted October 15, 201311 yr So my buddy Jeremy @ Disturbed Diesel Performance built me some injectors this past weekend. Bosch bodies with some 5x.012 SAC nozzles. We're thinking that I may have a bad injector or two, which is contributing to my 9-11mpg issues...
January 15, 201411 yr When the guy I work with put the 370 marine injectors (5x0.012@155°) in his truck it did the same thing yours is doing when it was cold out. he was running stock timing as well. A lot of times they will lope slightly when cold. Mine with 16.5* timing and 300 injectors has a slight lope cold. Rogan, yours sounds more like it is in the 20* timing range though.
January 15, 201411 yr Author ill check that then. I know my mpg is still crap though, in the 9-11mpg range.
January 15, 201411 yr Author ill check that then. I know my mpg is still crap though, in the 9-11mpg range.
January 15, 201411 yr ill check that then. I know my mpg is still crap though, in the 9-11mpg range. That just doesn't make sense to me.
January 15, 201411 yr I don't have a tractor that doesn't lope when cold, (stone cold @ 32 or less) either NA or turbo'd. JD, perkins, or cummins.... they do it all. how is yours starting..... does it crack right off, is it 'fighting' the starter? your 4000 psi = 275 bar.. Sounds about right to me. when's the last time you checked your turbo? Edited January 15, 201411 yr by rancherman
January 16, 201411 yr Author turbo makes 40psi boost but it's exceptionally quiet, even without the silencer ring.
January 16, 201411 yr The level of sound comes in large part from the type of air filter/intake set up i think. I know when I switched from my AFE cold air filter to the BHAF the turbo whistle became almost nonexistant. It was real noisy with the AFE but it went completely away with the new filter. The AFE was a very thin air filter I think.
January 16, 201411 yr Author on that note, I removed the Bhaf and tried it. same boost, same whistle as with filter.
January 16, 201411 yr well, your nasty fuel economy gotta be something other than the injectors... cause it's basically the same with either set of injectors. how long has it been this way... did it come on suddenly.. or gradually sink... or been this way the whole time?
January 17, 201411 yr Author fuel economy has always been crap but slowly gotten worse over time. the lope was only after injector swap.
January 17, 201411 yr Have you ever had your truck next to another 12V and noticed that one truck has a 'harsher' sound when idling? That is timing. The higher the timing the harsher the sound. Yours to me (in your video) sounds a lot like the timing is set way to high. Have you checked the timing?
January 17, 201411 yr Owner I'm pretty sure even ISX would suggest setting your timing to about 14* BTDC for common/daily driver. Excessive timing just moves your optimal power band up in RPM.
January 17, 201411 yr Author not yet. I don't have the proper tools to do so. my friend does but he's been busy so i just am waiting for him at this point.
January 17, 201411 yr Gosh, I remember when it was just as simple as taking a timing light and turning the distributor on a gasser...
January 18, 201411 yr Gosh, I remember when it was just as simple as taking a timing light and turning the distributor on a gasser... Yea, I used to do that sort of stuff for a living. That and change the points, plugs, and condenser.
January 22, 201411 yr Author 8inches of snow.. Think it might be a few days until I can get over there..
February 25, 201411 yr Timing is at 13.5 deg. We checked it on Sunday. Wow. I sure thought it was higher than that from what it sounded like. Now you really have me stumped.
So my buddy Jeremy @ Disturbed Diesel Performance built me some injectors this past weekend. Bosch bodies with some 5x.012 SAC nozzles. We're thinking that I may have a bad injector or two, which is contributing to my 9-11mpg issues...