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Engine Specific Info and Questions => IDI Engine => Topic started by: shwak23 on March 13, 2013, 07:05:11 pm

Title: Injection pump timing number continues to come up wrong.
Post by: shwak23 on March 13, 2013, 07:05:11 pm: I keep getting .44 on my timing gauge. What could the cause of this be?
If I adjust the timing a single tooth in either direction the injection pump lock no longer fits properly.... wtf?
1.6 na.

Sent from Outer Space!
Title: Re: Injection pump timing number continues to come up wrong.
Post by: 745 turbogreasel on March 13, 2013, 07:08:47 pm: english-metric error?
0.044 =~1.1MM
Title: Re: Injection pump timing number continues to come up wrong.
Post by: TylerDurden on March 13, 2013, 07:21:39 pm: You are turning the IP....? (The pulley shouldn't move.)
Title: Re: Injection pump timing number continues to come up wrong.
Post by: 8v-of-fury on March 13, 2013, 07:46:18 pm: Quote from: 745 turbogreasel on March 13, 2013, 07:08:47 pm
english-metric error?
0.044 =~1.1MM

YUP.

Quote from: TylerDurden on March 13, 2013, 07:21:39 pm
You are turning the IP....? (The pulley shouldn't move.)

I do believe he is turning the pulley in relation to try and get more swing out of it.

OP, you've got a metric gauge. Time it to .39-.40 and be happy
Title: Re: Re: Injection pump timing number continues to come up wrong.
Post by: shwak23 on March 13, 2013, 08:10:07 pm: For reals? I am dumbs.

At least my shame will forever be immortalized. Here on vwdiesel.net.

Wait no. I am second guessing myself but I don't think that is the case.
My gauge is a Mitutoyo digital gauge that clearly says mm at the bottom right.
However as I type this I see that my cold start is pulled. Let me try again without that noob mistake.

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Title: Re: Injection pump timing number continues to come up wrong.
Post by: ORCoaster on March 13, 2013, 09:06:06 pm: Wanted: one decent Mechanic to send to Mechanic Falls, Maine.
Title: Re: Injection pump timing number continues to come up wrong.
Post by: 8v-of-fury on March 13, 2013, 09:14:07 pm: Quote from: shwak23 on March 13, 2013, 08:10:07 pm
My gauge is a Mitutoyo digital gauge that clearly says mm at the bottom right.

Well 0.44mm would be extremely low timing! Half of what the lowest book timing is in fact. Would never run.. If it were in fact that low of a reading, turning the pump would make it right.
Title: Re: Re: Re: Injection pump timing number continues to come up wrong.
Post by: shwak23 on March 25, 2013, 09:27:12 pm: Quote from: ORCoaster on March 13, 2013, 09:06:06 pm
Wanted: one decent Mechanic to send to Mechanic Falls, Maine.

Well I forgot about this thread but it turned out that the previous owner had marked TDC incorrectly on the fly wheel. Upon finding and using the correct mark everything turned out just fine.

Sent from Outer Space!
Title: Re: Injection pump timing number continues to come up wrong.
Post by: wdkingery on March 28, 2013, 02:50:15 pm: Quote from: 8v-of-fury on March 13, 2013, 09:14:07 pm
Well 0.44mm would be extremely low timing! Half of what the lowest book timing is in fact. Would never run.. If it were in fact that low of a reading, turning the pump would make it right.

Believe I drove mine on the magic "oops-I-didn't-know-Prothe-sells-American-gauges" setting of .0011 for THREE DAYS. I had just got the car; first diesel. I thought the motor was real worn out, and I had the pump off for some reason.. glow plugs or something i dont' remember, but it was my first ever attempt at timing the injection pump with my shiny new second hand Prothe dial indicator. God was it hard to get that thing started. (I thought it was air in the lines!) Believe it misfired once every 15-20 seconds, horrible white smoke. Common sense eventually set in, and I googled ".0011 inches to mm" and found i was really only at .28mm, not 1.1mm like i had thought.

But if you rock a white helmet hard enough, you can get one started at less than half the setting.