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Cargo Master
Joined: Aug 2012
Posts: 2,871
Likes: 951
From: Kaufman TX
No start
Never worked on a 7.3 before. It's a 96 or a 97 I believe. I've got the flow chart. WtS comes on, Tach moves, cranks quickly, no smoke.
The truck did start and run about a year ago when it was parked but it needs injector cups, which is why it was parked.
I checked youtube and see where the fuel bowl is now so I'm going to check that next. I also found what I believe to be the ICP and unplugged that but no difference; a trick I remembered from my 6.0 days. It's oily though so I expect it's bad and needs to be replaced anyway.
Also through some searching I found someone who had a similar issue, and found that their HPOP reservoir was empty and if they filled it by hand the truck would start. Where/how would I try that? Right now the truck is in some tall grass and I'd love to get it moved to the garage about 200 feet away.
If anybody is in the Dallas area I'm not too proud to be taught/helped and willing to pay. This truck may end up at a shop but tow + shop rates kind of hurt!
Thanks.
The truck did start and run about a year ago when it was parked but it needs injector cups, which is why it was parked.
I checked youtube and see where the fuel bowl is now so I'm going to check that next. I also found what I believe to be the ICP and unplugged that but no difference; a trick I remembered from my 6.0 days. It's oily though so I expect it's bad and needs to be replaced anyway.
Also through some searching I found someone who had a similar issue, and found that their HPOP reservoir was empty and if they filled it by hand the truck would start. Where/how would I try that? Right now the truck is in some tall grass and I'd love to get it moved to the garage about 200 feet away.
If anybody is in the Dallas area I'm not too proud to be taught/helped and willing to pay. This truck may end up at a shop but tow + shop rates kind of hurt!
Thanks.
Thread Starter
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Cargo Master
Joined: Aug 2012
Posts: 2,871
Likes: 951
From: Kaufman TX
Awesome, I know exactly what you're talking about, thank you!
Lead Driver
Joined: May 2009
Posts: 6,815
Likes: 707
From: Tobyhanma, PA
Verify that the fuel bill is full and pumps actually working. The mechanical pump is located just behind the bowl on top of the engine. There is a Schrader valve on the side of the bowl to check pressure
You checked the other easy bits.
You checked the other easy bits.
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Cargo Master
Joined: Aug 2012
Posts: 2,871
Likes: 951
From: Kaufman TX
Thanks. I did check the fuel bowl after looking it up and it had fuel. I drained it anyway, then cycled the key and checked again and it was full again. I then reinstalled the cap, cycled the key, and hit the Schrader valve and it squirted so I believe I have basic fuel pressure.
I just pulled the sensor off the top of the hpop reservoir and stuck a 3" screwdriver in there and it came back completely dry. I checked the crankcase and if anything it's over full. Now I'm looking for a funnel small enough to fill the hpop reservoir.
I just pulled the sensor off the top of the hpop reservoir and stuck a 3" screwdriver in there and it came back completely dry. I checked the crankcase and if anything it's over full. Now I'm looking for a funnel small enough to fill the hpop reservoir.
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Cargo Master
Joined: Aug 2012
Posts: 2,871
Likes: 951
From: Kaufman TX
That did the trick! About 10-15 more seconds of cranking after filling the HPOP and it fired up. Surging and not happy for a little while after that and then it smoothed out and I was able to move it. I'll do some more searching around now and make another thread about the cause and fix of an empty HPOP reservoir if need be.
Lead Driver
Joined: May 2009
Posts: 6,815
Likes: 707
From: Tobyhanma, PA
Glad to hear you got it running!
Hopefullys nothing too serious that caused the hpop to run out of oil.
Hopefullys nothing too serious that caused the hpop to run out of oil.
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Cargo Master
Joined: Aug 2012
Posts: 2,871
Likes: 951
From: Kaufman TX
Also I just learned that this is a 97 built in Mexico truck. It's a really weird truck, but that's part of why I like it.
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Cargo Master
Joined: Aug 2012
Posts: 2,871
Likes: 951
From: Kaufman TX
I'm assuming one or more injector cup has failed since I find fuel in the coolant.
Lead Driver
Joined: Sep 2002
Posts: 9,548
Likes: 2,034
From: North Texas
Ah, could make sense. I have never had to diag that issue. A few places rent that tool and a few sell it. At that point may want to do injectors while apart.
I would probably knock out one bank, driver's first, then do other later.
Easily a snowball repair type of deal fixing items that need attention while down.
I would probably knock out one bank, driver's first, then do other later.
Easily a snowball repair type of deal fixing items that need attention while down.
Master of Strokes
Joined: Mar 2007
Posts: 6,808
Likes: 25
From: CA
I am pretty sure Riffraff rents their tool if you buy the cups from them.
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