Iv got a 93 7.3, it runs great, has no problem starting when its cold. but when its been run for a little and the engine bay is hot or even on hot days it gives me a hard time starting. I was told that its possibly a fuel injecton pump, but i dont want to start throwing parts at it before im sure of what it is.
Any help would be appreciated
My guess would be the injection pump. When the engine is warm you could try to pour some luke warm water over the pump to cool it down a bit, and see how it starts then.
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1990 f250, ext cab, 4x4, 7.3l non-turbo, rebuilt E40d...still sketchy and worries me though, 4inch exhaust 355,000miles and counting. rebuilt injection pump and injectors, manually activated Beru glow plugs, K&N filter/no soup bowl, well maintained, SCA additives, use Howes conditioner in every tank, added leaf spring in all corners, rust around all fenders My work truck
1984 toyota BJ60 landcruiser, 3B diesel, H55f 5 speed, Best rig Ive ever owned. Never needs anything, 498,000km, Old Man Emu suspension, rusty and running strong Will certainly outlive all my other wheels
1985 Toyota 4wd pickup, single cab, rare 2lt 2.4l turbo diesel, 5 speed, custom flatdeck, timing belt every 100,000k and shes good to go. 387,000km Excellent fuel economy!
if you pour water on make sure it is luke warm, not cold. cold water on hot metal = bad news.
I had the same problem you were having and when I knew I was going to have trouble I would use an electric fan (safer than water). Just let the fan run for about 15 minutes and you would be good to go.
Will it start after about a 5 minute or so shut down? I've heard that diesel fuel acts as a coolant and the real problems occur after say a 15 minute shut down. This is when the heat from the engine block gets up into the IP and shuts it down.
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1993 F350 E40D 7.3 IDI 169k stock stock and more stock.
It can also be your starter. When it's hot you have more resistance and the starter can't turn it over fast enough. Pull and inspect the starter, particularly the bushing end of the starter.
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Regards,
Paul - Pocono Mtns. USA '90 E350 7.3L Ex-Ambulance High Top 400K Miles, No Turbo, Stock Stock stock, No ELC! (Extended Life Coolant) & 10 Oz. Bars Stop Leak
Mine was the injection pump. Worn tolerances getting to big when hot to start. It ran fine but couldn't build enough pressure when cranking to start. Started fine cold. My injection pump guy said he'd seen a lot like this lately and felt it might be the new ULSD. He tells me he adds 1 quart ATF at every fillup on his rig. I did a final test on mine before sending it out for a rebuild, 80% waste motor oil / 20% diesel, it worked fine and started cold and hot which seems to back his theory of warm tolerances. That blend is way heavier than I ever run, kind of like putting heavier oil in a worn out engine for better oil pressure, it's just a bandaid on the real problem. Not running any WMO right now as I'm building a centrifuge to make sure all the metal particles are out of the oil then I'll filter to 0.5micron absolute and run less than 50%. Just a side note.
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1991 OBS E350 7.3 IDI cargo van running 50/50 - 90/10 WVO/solvent blends. Holley Red pump, Fram PH8A oil filter as prefilter, -6AN aluminum fuel lines from tank to engine. 3" Walker Dynomax muffler with turndown.
He tells me he adds 1 quart ATF at every fillup on his rig.
Ford now recommends Power Service with every fill up.
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Regards,
Paul - Pocono Mtns. USA '90 E350 7.3L Ex-Ambulance High Top 400K Miles, No Turbo, Stock Stock stock, No ELC! (Extended Life Coolant) & 10 Oz. Bars Stop Leak
Ford now recommends Power Service with every fill up.
What is Power Service? I assume some sort of top end lubricant? I'll have to do a search and get the MSDS.
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1991 OBS E350 7.3 IDI cargo van running 50/50 - 90/10 WVO/solvent blends. Holley Red pump, Fram PH8A oil filter as prefilter, -6AN aluminum fuel lines from tank to engine. 3" Walker Dynomax muffler with turndown.
I've used napthalene as an additive in my blends as well as acetone and turpentine in very low percentages. The more I dig the more I find there are issues with older engines and ULSD, especially engines with injection pumps. I also keep finding evidence that ATF is a great additive, or even a great fuel when properly thinned with D2 or kero. It would be interesting to see a study comparing the lubricant properties of regular diesel to ULSD. These pumps are lubricated as well as cooled by the fuel, take away lubricating capacity and it would be no surprise that the pumps wear faster. The same goes for those running blends, homebrew bio, SVO, if they don't take proper steps to dewater and remove all particulate they will see premature wear as well. I tested some of one of my blends on a lab centrifuge as was shocked at the particulate I found after my filtration process, shocked enough to stop using it until I finish my centrifuge. Anyway it would seem like cheap insurance (about $0.10/gal) to add ATF to a full tank. Besides that I've never heard of ATF gelling so it might help that issue in colder climates.
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1991 OBS E350 7.3 IDI cargo van running 50/50 - 90/10 WVO/solvent blends. Holley Red pump, Fram PH8A oil filter as prefilter, -6AN aluminum fuel lines from tank to engine. 3" Walker Dynomax muffler with turndown.
Many of us have used Power Service for years, probably the most widely used additive on the market.
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Regards,
Paul - Pocono Mtns. USA '90 E350 7.3L Ex-Ambulance High Top 400K Miles, No Turbo, Stock Stock stock, No ELC! (Extended Life Coolant) & 10 Oz. Bars Stop Leak
Many of us have used Power Service for years, probably the most widely used additive on the market.
I wasn't thinking of it as a diluant as much as I was thinking lubricant. The website makes a statement in regard to lubrication.
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1991 OBS E350 7.3 IDI cargo van running 50/50 - 90/10 WVO/solvent blends. Holley Red pump, Fram PH8A oil filter as prefilter, -6AN aluminum fuel lines from tank to engine. 3" Walker Dynomax muffler with turndown.
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, 4inch exhaust 355,000miles and counting. rebuilt injection pump and injectors, manually activated Beru glow plugs, K&N filter/no soup bowl, well maintained, SCA additives, use Howes conditioner in every tank, added leaf spring in all corners, rust around all fenders
My work truck
Will certainly outlive all my other wheels
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