Question about 1992 Ford F250

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1992 Ford F250 7.3 Diesel hard to start

The truck has a block heater that has been plugged in. The temperature outside is about 10 max. Sometimes it cranks and wont start, other times it still takes a long time to start, sometimes up to 20 seconds.

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It is possible that some of the glow plugs might not be working. This will cause a hard start and smoking condition especially in cold weather.

Posted on Dec 24, 2008

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Astro start hst5224 model


Yessir.
In the old days, because of the ambient temperature's effect on the crankcase oil and the diesel fuel, often two batteries were used to state the diesel in cold weather.
You might see if there is room for an additional battery on the opposite side of the vehicle from the one that is installed now.
The additional battery can be wired parallel with the one already there, which will not increase the voltage, only the starting amps.
I have done this before, several times.
Another choice is an engine heater, which either screws into the block or is installed inside a radiator hose that has been modified for this purpose.
The cord then is plugged in to an outside 110 volt source, and that will heat the motor oil to ease starting.
God bless your efforts.

Nov 09, 2015 | Ford Cars & Trucks

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97 7.3 diesel hard starting


This is a good engine but they need work from time to time. What is the outside temperature while you experience this hard start? If you plug in the block heater, does the engine start better? Is the engine light on or does it come on at times while you are driving? Hard starts can be related to several different issues. This engine isn't easy to work on unless you have an advanced scan-tool. You need to look at live data and run some tests. The more common failures are clogged fuel and air filter. Dirty ,worn, or defective fuel injectors, low fuel-line fuel pressure, poor oil quality or low oil level, worn or defective ICP sensor, low injection pump pressure, loose or leaking IPR valve, or low compression. These examples should help get you started. You may need to have the truck diagnosed so you know what direction to go in. If you need any additional information, please write back. Good luck.

Mar 08, 2014 | Ford F-350 Cars & Trucks

1 Answer

I have a 1989 international truck w/ 7.3 litre diesel. Same engine as in 1989 ford f-350 diesel. Trouble starting. I replaced glow plugs and glow plug controller / relay. Still problem starting do not want...


you answered your own question with # 1
the fuel leak is doing opposite when starting it is sucking
air . i had the same problem on mine,
it also let the fuel drain back to the tank that then
takes forever to reprime itself
hope this helps

Nov 14, 2010 | 1989 Ford F 350

1 Answer

I own a 2001 F350 with a 7.3 diesel and it is hard to start when the temp is 25 above. I will cycle the glow plugs 4 times and try to start and it will not start. I have brought it to two different shops...


the glow plugs are bad when replacing replace the wiring harness as well any ford dealer will not replace just the glow plugs, i know i used to be there diesel mechanic.this is the reason it will start with the block heater is pluged in

Oct 25, 2010 | Ford F-350 Cars & Trucks

1 Answer

Problem with cold starting Ford 7.3L Diesel at > freezing temps


most likely the relay. its located to the left of the fuel filter( looking at the motor from the front). my experience is that they only last about 50,000 miles. the part costs about $20 at an navistar dealer. remove the cowl over the filter, disconnect the batteries(so you don't short the new relay out if you cross the polarity with a wrench) ,remove the four wires from the ceramic relay, un-fasten the relay from the base. reverse the process with the new relay. CAUTION; do not over-tighten the nuts on the wire studs, you could crack the ceramic relay.(iv'e done it) . hope this helps

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1 Answer

Hard Starting diesel


You need to check to see if your block heater is working if equipped. You also should have a plug to plug in for you heater to heat your dielel fuel.

Jan 15, 2009 | 1993 Ford F350

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I don't know if my truck has a block heater. I have a 2006 Ford F-250 Super Duty. I bought it in Arizona and moved to Washington. The temp is at 5 degrees outside and I am having troubles starting my...


if it is a powerstroke im sure it does if it is a V10 triton look for a 110v male connection somewhere under/inside the front bumper. if purchased in a hard freeze state it probably comes standard .

Dec 22, 2008 | 2006 Ford F-250 Super Duty

1 Answer

1992 F-350 Dsl - very hard to start when cool


are you using cold temperature engine oil!
if not, try changing oil for cold temperature!

hard starting happens due to the cold temperature, air pressure is low during this season so compression inside the engine is low resulting to hard starting!

make sure that all your glow plugs are working.

Nov 07, 2008 | 1992 Ford F350

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