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Timing or bad fuel? new ip

Jason63

Jason63

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North Idaho
i just put in a new ip from pensacola diesel, installed on a reman longblock from international diesel, started up after 20 sec of cranking after never starting with my old bad ip. it blows white smoke and idles rough, but if i hold it steady at about 900 rpm for 30 sec or so it stops blowing smoke and idles smooth. i have not timed it, i don't have the stuff and no where for 80 miles does it, so im wondering if i should just let it run for a while to see if it clears up or bite the bullet and bring it up to spokane to have it timed, there are no codes or anything, and its a 95 so i can't do it without the computer
 
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If the ESO is exactly vertical, engine should run, and continue to run thru the 50 starts, when PCM will measure and recalculate timing and TDCO - exactly vertical is factory-spec timing - current conditions sound a little abnormal, but not knowing fuel freshness and such, may be ok - let it run till ECT is ~190*F, see if conditions improve
 
It sounds like what happend to me. It took a good half hour of driving it before it ran smooth although mine didn't smoke. I think there is a way to purge the air quicker by unpluuging the OS ??
I'll let JD take it from here. I didn't do that. I drove the air out of it.
Does the smoke smell like anit freeze or raw diesel. The two smells are substatially different.
 
yeah sorry i didn't give fuel condition, its been in the tank since sept. its about 3/4 full, its got tranny fluid in it, which is what a semi diesel mechanic told me to do, anyway i called spokane diesel pump and repair, which is closed place to me, im in idaho they are in washington. and what they said is to drain the fuel because esp with a fresh reman, you don't want that in the fuel, put fresh diesel in and drive it for about 500-1000 miles before getting it timed, btw ive only ran in for about 5-10 min
 
well, I certainly am not one of the pros on this site , however I am in the retail fuel business and if the fuel has only been in it since sept it is probably fine. Pull the filter and look for sludge or algae. If the filter is clean I would not waste my time or the fuel. it doesn't go bad like gasoline. 5-10 mins is not nearly enough time to purge the air. I was hoping JD was still on but IIRC what he said(and I'll regret trying to reiterate) was something about the air in the system causing the engine to run out of balance and the PCM trying to compensate so it makes it take even longer. I just drove mine for about 1/2 hr and it was fine . Do what he said above and drive it.
 
Fuel sitting idle from September fall thru winter thru spring into summer has had plenty of time to go stale due to local ambient conditions - if fuel is cloudy, pull the lp fuse, drain the fuel filter cannister, leave the top off, and pour fresh fuel into the cannister as the engine consumes it - if it runs better with fresh fuel, there are several fuel additives that will freshen it up, long as there is no great accumulation of H20 in the fuel - the water\fuel interface is aphrodisiac to Diesel-eating algae, which will cloud up the fuel

New ATF is not real good Diesel fuel additive, but is better than nothing for improving lubricity for the IP mechanicals - if it was used ATF, imagine the metallic and fiber particles now in your fuel
 
Sorry JD I gotta disagree. I have fuel that sits in tanks longer than that. Never any issues. JMO. If the filter is clean I say it's fine. I have customers who have both on and off road diesel sit in thier tanks all winter, no issues ever. I take one of my trucks off the road every spring and it sits until fall. No issues
If it was contaminted fuel or tank to begin with, that is something else.
 
Fwiw after my IP was changed engine would blow white at rpm,s over 2800 .Some black as well . It did clear up after some hours of driving & some wot s.
 
well i had the fuel lines off when i changed ip a few days ago and it was clear, but i will check fuel canister, and no it was not used ATF it was new out of the quart, i was just curious because ive heard it can mess with optical sensor, and ive they said its bad to put through a reman engine
 
May well be, but this is all moot if the fuel is cloudy - cloudy fuel ain't really-good fuel for the Optic Sensor, and won't run like good fuel - pouring fresh fuel in the cannister while the engine is running is a good test, quickly determining further requirement

- ATF in the fuel cannot possibly affect the engine mechanicals, as it is directly injected into the cylinder, burned, and exhausted past the exhaust valves - used ATF can damage the IP mechanicals and the injectors
 
Like I said, JD not arguing, if the fuel is bad it's bad but 20 yrs in the Retail fuel business I have rarely seen fuel go bad in that time frame unless there was an existing condition. Cloudy fuel is usually wax crystal in cold weather.
 
Or algae, or rust or\and other oxidation due to water contamination stirred up by the lift pump and the fuel return line - all input is good, but the point is, don't assume the 9 month old fuel is good, then start looking for other causitive(s) when it's easy to eliminate the fuel as being causitive
 
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