 Timing - what am I doing wrong? |
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| BCinSC |
  Jul 15 2003, 10:32 AM
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#1
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Nothing but Trouble  Group: Members Posts: 138 Joined: 8-June 03 From: Wakefield, MA Member No.: 800 Region Association: North East States  |
I've set timing before and it seemed right, but today, I just can't get it. I gapped the points with my feeler, setting the basic dwell at 44 degrees. I can see all markings on my impellor. With engine idling, I can advance timing enough to see red mark (27deg), but I can't back it off enough without stalling to get red to stay at 3500 rpm - hell, I rarely even see red mark on revup or down. HELP PLEASE
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Replies(1 - 9)
| Porsche Rescue |
Jul 15 2003, 10:36 AM
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#2
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Saving and Enjoying Old Porsches Group: Members Posts: 2,978 Joined: 31-December 02 From: Bend, Oregon Member No.: 64 Region Association: None |
Do you have vacuum hoses to distributor disconnected?
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| BCinSC |
Jul 15 2003, 10:38 AM
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#3
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Nothing but Trouble Group: Members Posts: 138 Joined: 8-June 03 From: Wakefield, MA Member No.: 800 Region Association: North East States |
Yes. Following directions in Haynes book and Pelican Tech Article.
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| airsix |
Jul 15 2003, 11:03 AM
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#4
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I have bees in my epiglotis Group: Members Posts: 2,196 Joined: 7-February 03 From: Kennewick Man (E. WA State) Member No.: 266 |
Can you see the mark move when you rev the engine up and down or is it staying in the same possition? Perhaps your mechanical advance is gummed up and sticking. I had a problem like this once - the dizzy shaft is two-pices held together by a c-clip under the felt button in the hole in the top of the shaft under the rotor. My clip popped off and the upper half of the shaft walked up enough that the advance weights got bound up and stuck.
-Ben M. |
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| BCinSC |
Jul 15 2003, 11:04 AM
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#5
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Nothing but Trouble Group: Members Posts: 138 Joined: 8-June 03 From: Wakefield, MA Member No.: 800 Region Association: North East States |
Possibility. I'll check. Wouldn't that really screw engine running, though, as in it wouldn't run?
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| Porsche Rescue |
Jul 15 2003, 11:30 AM
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#6
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Saving and Enjoying Old Porsches Group: Members Posts: 2,978 Joined: 31-December 02 From: Bend, Oregon Member No.: 64 Region Association: None |
Not sure if this will make sense, but I once had the distributor 180 degrees off, but was able to rotate it enough to get engine to run.
Could not time it properly though because the condensor hit engine tin, not allowing enough rotation to time it. I set at TDC by hand (plugs out), removed distributor, rotated engine 360 degrees and reinstalled distributor. Everything came together. |
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| airsix |
Jul 15 2003, 11:37 AM
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#7
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I have bees in my epiglotis Group: Members Posts: 2,196 Joined: 7-February 03 From: Kennewick Man (E. WA State) Member No.: 266 |
QUOTE(BCinSC @ Jul 15 2003, 09:04 AM) Possibility. I'll check. Wouldn't that really screw engine running, though, as in it wouldn't run? It would run (poorly). QUOTE I can advance timing enough to see red mark (27deg), but I can't back it off enough without stalling to get red to stay at 3500 rpm - hell, I rarely even see red mark on revup or down. HELP PLEASE When you say you "can't back it off enough without stalling" are you saying that if you set the advance at the red mark at 3,500rpm that then the engine won't idle? Or are you saying something else? IMPORTANT: If you can set the proper timing at 3,500rpm and it runs fine EXCEPT AT IDLE, then you probably just need to adjust the idle. Changing the timing will always have an effect on idle speed. Don't forget to hook the vacuum lines back up before adjusting the idle (air bleed screw). Assuming I understood the problem, I hope that helps, otherwise ignore me. (IMG:style_emoticons/default/smile.gif) -Ben M. |
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| BCinSC |
Jul 15 2003, 11:43 AM
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#8
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Nothing but Trouble Group: Members Posts: 138 Joined: 8-June 03 From: Wakefield, MA Member No.: 800 Region Association: North East States |
I've never had dizzy out and thus can't imagine that it's reversed when she was running and able to be timed before.
Idle bleed screw wide open and she'd die at idle if I retarded the spark enough to theoretically get 27 degree mark in notch at 3500. Well, I don't know exactly what changed, but perseverance pays. Cranky ***** finally timed. Idles at 800. Smells like 30 year old engine. |
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| Porsche Rescue |
Jul 15 2003, 01:26 PM
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#9
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Saving and Enjoying Old Porsches Group: Members Posts: 2,978 Joined: 31-December 02 From: Bend, Oregon Member No.: 64 Region Association: None |
Good, sounds like you got it. Disregard everything I said if you did not remove the distributor.
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| rhodyguy |
Jul 15 2003, 03:11 PM
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#10
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Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,084 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
i checked my timing as well. thanks mike. i'm just a deg or so under not worth screwing with at this time. ordered my helmet, SILVER. see you sat jim?
kevin |
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