Question about 1988 Ford F 250

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7.3 international deisel smokes a lot...

I put another engine in my 1988 ford 250 deisel and smokes a lot, I've changed The injection pump and reset the timing, Plenty of fuel and runs great but smokes unbelievably, What could I do to get it to stop smoking???

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Call "Duane" at the Dalton Bus Garage, Dalton, OH...you'll have to call the High School office (be NICE, he doesn't HAVE to answer your questions). No one knows more about this engine than Duane.
Good Luck
Sorry, you'll have to Google for the number

Posted on Jun 15, 2009

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1 Answer

I have a 1988 ford 250 with a 7.3 diesel and it


Maybe just that the motor is cold or there is moisture in the carbie
Diesles usually smoke when you first turn them on and let them idle

Jul 21, 2010 | 1988 Ford F 250

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I have a 1988 Ford F250 with the 460 engine and duel tanks it is factory fuel injected.....the front tank ran out of gas so I switched it to the rear tank( the same as many times before) the truck died and...


The fuel pump relay and the oil pressure switch as well. The oil pressure switch runs power to the fuel pump when you first start it
When the oil pressure reaches operating range the relay takes over
They are both inexpensive so replace both of these parts to be safe and kill two birds with one stone. If one goes out the other will soon enough

Mar 27, 2010 | 1988 Ford F 250

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88 f250 300 6cyl,changed all fuel relays,fuel pressure regulator,starter,coil,fuel pump,everything possible,started once,ran rough,finally idled,shut off,started again,waited 20 min,wouldnt start or...


I know some old fuel injected systems will dump fuel because of the coolant temp sensor should be located on lower intake in the front. Also check the timing.

Jan 25, 2010 | 1988 Ford F 250

1 Answer

Smoke blowing deisel i30


What colour smoke is it..... if its Black then the pump is over fueling so both pump and injecters need doing.
But if the smoke is BLUE then you have engine problem like Rings or Valve guides etc
so lets hope you have BLACK
Have a good day

Sep 23, 2009 | 2001 Hyundai Santa Fe

2 Answers

I put another engine in my 1988 ford 250 deisel and smokes a lot, I've changed The injection pump and reset the timing, Plenty of fuel and runs great but smokes unbelievably, What could I do to get it to...


Before you do the next oil change,get a can of motor flush.
This is the inexpensive method the free up the rings and restore some of the compression.
Use Shell 15W40 oil ==
Do you know the history of your replacement engine?
When was the last timing belt change?
A loose timing chain and guide can cause injector timing problem.
==== Start monitoring the coolant level for protential head gasket leak. ====
To save time,I would do a high rpm (below REDLINE) highway ran to blow off all remaining diesel SOOT.
Let the shop to do a compression test. DO NOT DO THIS YOURSELF.
The max psi is 1850 PSI
=== Stay away from biodiesel blend fuel until you figure out what's the cause of the problem.
Use Diesel Cleen silver bottle and see is there any improvement. ===
Add the recommend dose of SEAFOAM into the crankcase to soften the valve stem seal.
Leaky valve stem seal can introduce oil drop into the cyclinders over-night. =====
Mointor any oil lose from valve cover.

Is the smoke only from tail pipe?


Please post answers and I will follow up on it.

Jun 15, 2009 | 1988 Ford F 250

1 Answer

Reinstallation of cylinder head on 4d56 deisel engine


Suspect cam timing or injection pump timing is a tooth off causing problem.

Mar 31, 2009 | 1988 Mitsubishi Pickup

2 Answers

2003 F-250 powerstroke


Could be one of many things:

-Clogged fuel filter
-Leaking fuel line
-Bad fuel pump
-High or low oil level
-Overdue oil change (Will explain both these possible causes later)
-Bad high pressure oil pump, ICP sensor (injection control pressure sensor), ICR (injection control pressure regulator), or bad HEUI injectors, or oil lines
-Leak in the high pressure oil system (unlikely because you would have noticed this... This does not go undetected as the underside of your vehicle would be literally covered in oil and dripping in a very short period of time after the leak develops)
(Powerstroke engines use a HEUI fuel injection system, "Hydraulically actuated/electronically controlled unit injection", which relies on a high pressure hydraulic pump that uses engine crankcase oil and pumps it at high pressure (500 psi or so). This oil is sent to your fuel injectors to provide means for actuating them and pressurizing the fuel into the cylinders. High or low engine oil level, or old, diluted, additive depleted oil will cause this system to aerate the oil and result in poor fuel injection capabilities)

There might be other causes but this is the Powerstroke`s weak point... The HEUI system was first designed by Caterpillar, which makes a lot of excellent/bulletproof HEUI based engines, both in passenger vehicle and heavy trucks and equipment. The Powerstroke is an engine designed and made by International Truck and Engine, which cannot seem to make a HEUI engine, in any market, whether passenger, heavy truck, or equipment that does not suffer from fuel injection issues.

Aug 19, 2008 | 2007 Ford F-250 Super Duty Lariat

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