KDP and Timing Question

[Wiredawg]

Disregard first part of question: I just performed a TDR search that shows KDP is a problem on the 1st gen trucks and I found sources for the parts. I would still appreciate timing info though.



First, I found a KDP kit for $48 on TST site, but it listed for '94 to 98 model years. I emailed asking if they had an application for '89 to '93. They hit me back saying KDP problem was only on the 94 to 98 models? Is this correct? If not, can someone give the part #s and source for this on my '93?







Next: Does anyone have instuctions on haow to chage timing on a '93. A friend of mine changed timing and fueling on my truck and it runs great empty. But pulling 8K lb enclosed car hauler, mpg drops from 18 to 9. I'm thinking he may have advanced timing too much? Anyway, I would like to check it to see.



Thanks for the help, Wiredawg

 

[Greenleaf]

I seriously doubt that timing is the cause. Though others will disagree, timing is best acomplished by "ear". If you don't have confidence in yourself to do so, then use the dial indicator method installed into the pump head. (You will inevedable, have to remove fuel lines)



Most guys simply turn the pump a samall amount untill the engine sounds about right. This would equal say, 1/8th inch of upward travel from the OEM timing reference.



Your good to go... .....



GL

 

[JLEONARD]

Personally I see no reason to have to buy and install a tab to hold the pin in place. There is plenty of material and room available to stake the aluminum to hold the pin.

Use a flat ended punch. . half on the aluminum, half over the front of the pin. A couple of good taps and you have a nice stake mark. Do that in 2 or 3 spots and there is no way the pin will come out.

We just did that on my nephew's truck.

Jay

 

[CLiberty]

Personally I see no reason to have to buy and install a tab to hold the pin in place. There is plenty of material and room available to stake the aluminum to hold the pin.
Use a flat ended punch. . half on the aluminum, half over the front of the pin. A couple of good taps and you have a nice stake mark. Do that in 2 or 3 spots and there is no way the pin will come out.
We just did that on my nephew's truck.
Jay

Thats what I did. The PO had jigged the pin and when I had the front cover off to replace the crank seal I gave it tap to set it (it was`nt loose) and then staked it. I also re-installed the set screw from when it was jigged. Ck all the other t-cover bolts while your in there as some of those have been known to loosen up also (mine were ok).

 

[tugboatphil]

Ditto what jay said. That's how mine is held in place.



Wiredawg, that timing thing sounds like it's probably not fixable. You might as well get rid of that truck. So to help you out, I'll come down and get rid of that problem for you... and since it's so close to Christmas, I won't even charge for it!!



OK. It was worth a try. :-laf :-laf

 

[Braveair78]

WireDawg... . you sound like an Air Force OSP guy... . copper and fiber? If you want the KDP tab

you can get one thru Piers Diesel... it's pretty cheap. . but, like the guys said... you can stake it

just as easy. Using the dial guages you can set timing... . If I remember correctly to advance the

injection pump moves towards the fender. The importance of using the guages is that it

establishes TDC... . and TDC should be where the notch in the harmonic damper lines up directly

. . in other words it should point straight up... . Yes, by sound you should be able to set it... . it is a noticeable change

in sound and if you pass it you can hear it as well... .

 

[Wiredawg]

Thanks for the responses... will the pump timing mark be above or below the gear housing ref point after the adjusment? I don't know where the original stock position was. The pump is currently sitting about 1/16th inch below the gear housing ref mark. I guess when the two line up it is TDC? I'm used to the electronics of the 2d and 3d gen trucks, so now going back in time is a little challenging.



Guys, Sounds like staking the pin is the way to go.



Tugboatphil: Thanks for the help. the way to TX is head due North about 20,000 miles; you can't miss it. :-laf



Braveair78: Yep, I'm an old outside plant guy... been forever since I've climbed poles and dug ditches. Messing w/ all the little wire in dark places has made me blind too. Six more months to finish 30 years.



Y'all have a Happy New Year,



Wiredawg

 

[Wiredawg]

Thanks for the Help

I actually finally found the timing info in my service manual. . just had to look in the right place under fuel systems, not under engine timing.



Got it all figured out no so mayby next weekend I will do the KDP.



Cheers, Wiredawg

 

[Greenleaf]

Guess you found your problem... ... ... ... ... ... ... . 1/16" below the timing mark on the gear case. Make sure you tell the guy who set the timing the correct method so he knows. It's alway best to learn from a mistake.