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7.3L IDI Diesels (Not Power Strokes) Technical discussion of topics related to vehicles powered by the 7.3 Liter In-Direct Injection Navistar engines.

       
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Old 11-20-2005, 08:09 AM   #1 (permalink)
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93 7,3 IDI non turbo firing order?

93 7,3 IDI non turbo firing order?
Thanks Marc
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Old 11-20-2005, 09:48 AM   #2 (permalink)
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Re: 93 7,3 IDI non turbo firing order?

This is Ziggsters info......6.9-7.3 are all the same.

The timing mark is found on a little plate that is on the front of the engine on the passenger side. The plate is mounted so it is very close to the main pulley on the lower front of the engine which is mounted on the vibration damper. On the side of the vibration damper, is a line, which when lined up with the line marked (O) on the plate, tells you that the #1 piston is at TDC(top dead center) You can see the line on the damper, and it points to the line on the plate with the (barely visible)O mark on it.You'll have to find a way to turn your engine over by hand. Make sure you remove the power wire to the injection pump(so the engine won't start)and then rotate the engine until you can line up the marks.

The engine rotates in a clockwise direction as seen from the front of the truck, and for every 1/4 turn of the engine(crank) each next piston will arrive at TDC. So, When the line on the vibration damper is at the 2 oclock position, cylinders 2 and 5 will be at TDC. When the mark is at the 5 oclock position, cylinders 7 and 6 will be at TDC, 8 oclock has cylinders 3 and 8 at TDC, and back to 11oclock, 1 and 4 will be at TDC.

Cylinder numbers are assigned 1,3,5,7 on the left(passenger) bank from front of truck to back, and 2,4,6,8 on the driver's side, front to back. Firing order is 1,2,7,3,4,5,6,8.
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Old 11-20-2005, 09:53 AM   #3 (permalink)
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Re: 93 7,3 IDI non turbo firing order?

1-2-7-3-4-5-6-8.Cyl numbers are 1,2,3,4,pass side,5,6,7,8,drivers side.

Hey Pete it seems we were typing at the same time,when i saw you cyl #s i checked out my books,Haynes(10330) said as you did and Ford(8136) says as i did [img]/ubbthreads/images/graemlins/shrug.gif[/img].
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Old 11-20-2005, 02:42 PM   #4 (permalink)
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Re: 93 7,3 IDI non turbo firing order?

it says on the intake so i'm guessing that is right.
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Old 11-20-2005, 05:52 PM   #5 (permalink)
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Re: 93 7,3 IDI non turbo firing order?

[ QUOTE ]
it says on the intake so i'm guessing that is right.

[/ QUOTE ]
Yes the firing order is on the intake,both books agree on that,however there is a discrepency between the 2 books regarding cylinder locations.Look back at my last post.
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Old 11-20-2005, 08:30 PM   #6 (permalink)
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Re: 93 7,3 IDI non turbo firing order?

the cylinders are numbered on the intake.
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93 F250, regular cab, 4x4, 7.3 NA, ZF5, 3.55, 209k miles, came home 2/28/06, soon to be turbo.
92 250, regular cab, 4x4, 7.3 NA, E4OD, 3.55, 316k miles, came home 8/28/04, aluminium 16x7 wheels, 285/75/16 Sport King AT.
89 250, extended cab, 4x4, 7.3, ATS wastegated, 5" straight pipe, hand shaker, 4.10, slightly toasted, waiting for a new cab and front end, came home 12/24/04
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Old 11-20-2005, 09:18 PM   #7 (permalink)
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Re: 93 7,3 IDI non turbo firing order?

[ QUOTE ]
Cyl numbers are 1,2,3,4,pass side,5,6,7,8,drivers side.


[/ QUOTE ]

International/Navistar - Makers of the engine, number the engine cylinders the same way it's stated in the Hayne's Manual.. Check CNDSARGUY'S thread... That's the correct sequence..







Al
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--- Two 1978 Bronco's- One stock 400 cu" and one Bombed 406 cu"--- 1972 E-200 van. 302 cu"--- 1975 F-600 with 361 cu" Industrial engine.
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Old 11-20-2005, 09:42 PM   #8 (permalink)
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Re: 93 7,3 IDI non turbo firing order?

[ QUOTE ]
[ QUOTE ]
Cyl numbers are 1,2,3,4,pass side,5,6,7,8,drivers side.


[/ QUOTE ]

International/Navistar - Makers of the engine, number the engine cylinders the same way it's stated in the Hayne's Manual.. Check CNDSARGUY'S thread... That's the correct sequence..

Im not saying which one is correct,just stating the fact that the 2 books differ,and the wrong one could cause someone a lot of grief.
I have no problem believeing what cdnsarguy or zig says.Just pointing out a mistake in the book.






Al

[/ QUOTE ]
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Old 11-21-2005, 01:05 AM   #9 (permalink)
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Re: 93 7,3 IDI non turbo firing order?

[ QUOTE ]
Im not saying which one is correct,just stating the fact that the 2 books differ,and the wrong one could cause someone a lot of grief.
I have no problem believeing what cdnsarguy or zig says.Just pointing out a mistake in the book.

[/ QUOTE ]

Yeah, I hear you.. If that comes out of a Ford Factory Manual that is a pretty big screw up and you're right. It could cause someone a lot of grief. But, they could always turn around and sue Ford and get a 2006 F-350 diesel Crewcab for their mistake, right?






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1991 F-350 XLT Lariat 4x4. Metallic Midnight Blue over Silver Gray.. Canadian Made. Now has 82000 miles. Std Cab SRW-7.3 With a Banks Stinger Kit. ZF-5 speed- 4:10. Five rear overload springs rated at 3000 lbs, Smitty Built side step tubes, mounted to frame with 1/2 " steel plate.. SteelHead sliding rear bumper. SteelHorse overhead panel with a Cobra 25. Dash mounted compass and altimeter, pillar mounted Banks pyrometer. 11.5 FT camper in the bed 99% of the time. Camper has been restored all the way out from it's frame. Camper has two #30 batteries, good for a week dry camping in the woods..
--- Two 1978 Bronco's- One stock 400 cu" and one Bombed 406 cu"--- 1972 E-200 van. 302 cu"--- 1975 F-600 with 361 cu" Industrial engine.
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Old 11-21-2005, 07:26 AM   #10 (permalink)
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Re: 93 7,3 IDI non turbo firing order?

Actually its a Chiltons book,just has ford in bold letters on the cover.I know the Haynes has a couple of mistakes,1st important one i found in the Chiltons though.
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Old 11-21-2005, 09:48 PM   #11 (permalink)
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Re: 93 7,3 IDI non turbo firing order?

[ QUOTE ]
Actually its a Chiltons book,

[/ QUOTE ]

That would make more since.. Restores my faith in Ford again...






Al
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1991 F-350 XLT Lariat 4x4. Metallic Midnight Blue over Silver Gray.. Canadian Made. Now has 82000 miles. Std Cab SRW-7.3 With a Banks Stinger Kit. ZF-5 speed- 4:10. Five rear overload springs rated at 3000 lbs, Smitty Built side step tubes, mounted to frame with 1/2 " steel plate.. SteelHead sliding rear bumper. SteelHorse overhead panel with a Cobra 25. Dash mounted compass and altimeter, pillar mounted Banks pyrometer. 11.5 FT camper in the bed 99% of the time. Camper has been restored all the way out from it's frame. Camper has two #30 batteries, good for a week dry camping in the woods..
--- Two 1978 Bronco's- One stock 400 cu" and one Bombed 406 cu"--- 1972 E-200 van. 302 cu"--- 1975 F-600 with 361 cu" Industrial engine.
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