1986 F250 ext cab 6.9 with automatic. It starts hard and sometimes not without ether sprayed in intake. Has only 117,000 miles on engine and seems to smoke quite a bit no matter hot or cold. What should the operating temp be? Sorry for all the questions I am new to diesels, thanks.
On starting: what shape are the glow plugs in? do you manually engage them with a button or does it do it automatically?
On smoking: What color is the smoke? White or black? Give a few more details, please.
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83 F250 Navistar 6.9, B-W T19 4 speed, aftermarket dually, slowly being morphed with my
84 F350 6.9 I bought for spare parts or rebuild
The smoke seems light colored gray or close to it, it runs real well and has good power once started. It just smokes, it also seems to run fast rpm's on the highway above 55 I may need to find axle gearing. The trans doesnt have overdrive.
1986 F250 ext cab 6.9 with automatic. It starts hard and sometimes not without ether sprayed in intake. Has only 117,000 miles on engine and seems to smoke quite a bit no matter hot or cold. What should the operating temp be? Sorry for all the questions I am new to diesels, thanks.
Do yourself, and MAYBE the next owner a favor and do not use ether. Glow plugs, low compression, air in fuel, low compression, CDR valve, worn oil rings all can affect this
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The full loath honey, but to the hungry- even what is bitter tastes sweet.
Do yourself, and MAYBE the next owner a favor and do not use ether. Glow plugs, low compression, air in fuel, low compression, CDR valve, worn oil rings all can affect this
OR park it facing downhill a little, IMHO, that seems to be halpul,
Lcjeff
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Elk Truck '87F-250 stock, minus that pesky water seperator/air inlet, with tommy gate
For your starting problems, I'd start with the glow plugs. Make sure you have good operational ones. May want to consider changing over to a push button system. The 6.9's are renowned for having faulty gp controllers. The controller gets stuck in the on position and burns out the gps. Especially the cheaper plugs. Consider getting Wellmans, I haven't found any better. Can find them from a seller on ebay for a great deal. If you don't want to use a push button, the same guy sells a package deal of plugs and controller. My truck runs between 160 and 190. Normally running down the road, I average about 175. Lastly, don't ever, ever, EVER use ether!! Ether will destroy your engine. Eats seals, liners, rings and more. I've seen what happens when too much ether is used to start an engine. Not much left of the top end of most of them. Hope this helps a little.
The truck has the glow plugs wired to a toggle switch and the light comes on in the dash when I hit the switch. The truck will crank over for quite a while before it even starts to hit.
Sounds like the plugs are toast. Check the other threads on this site on how to test them. My brain is on overload right now. Just be careful when you change them not to rush things and break one off in the head. If you do, don't get frantic, there are enough of us that can help get them out. Also, check the return fuel lines. Over time, they get hard and brittle and crack allowing air to get in the fuel system. This can make for hard starting problems as well.
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Red 86 F250 Supercab XLT, Longbed, 6.9l, 4 speed with DNE-2 Overdrive, 2WD, Reclining Highback Captains chairs with arm-rest, Holly Red pump, push-button glowplugs, Racor 645 water separator with fuel heater, K&N Air Filter, Headlight Relay Upgrade, lots of extra lights, Isspro EV series: Pyro, Oil Pressure, and Voltage in a Autometer 3 pod A-pillar. Bulldog Security System with remote entry. Remote lube TOB.
BOOB man - Brotherhood of Oil Burners
Last edited by Joe Mc : 08-14-2008 at 03:31 PM.
Reason: added link to ziggs homepage
A toggle switch is a real bad idea. Easy to leave them on too long. Use a push button or momentary toggle, and go the full 10-14 seconds ONCE. Smoking all the time is most likely injectors. At 117K, they may be original and you should consider replacing the IP and injectors.
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