 Timing too advanced |
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| familienauto |
 Aug 12 2010, 05:05 PM
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Volksporsche  Group: Members Posts: 136 Joined: 5-November 06 From: UW Seattle Member No.: 7,156 Region Association: Pacific Northwest  |
73 1.7 D-jet, vacuum advance stock distributor.
First time I have set the timing on this car myself, but used to doing it on VWs with Type I and IV engines. The fan has two marks, a "0" for TDC, and a red notch for 27 BTDC. Distributor vacuum hoses removed and plugged. Even with the distributor turned as far clockwise as it will go, the timing is (according to the marks on the fan) at least 10-15 degrees too advanced at 3500 RPM. Is the logical explanation that the fan was somehow installed incorrectly? The car was running fine, I pulled the distributor to clean the trigger points. I marked how it was lined up before, so I'm tempted to just put it back, but this is a little unnerving. |
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| avidfanjpl |
Aug 12 2010, 07:36 PM
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914 Hemophiliac Group: Members Posts: 720 Joined: 6-April 10 From: Bear, Delaware Member No.: 11,566 Region Association: MidAtlantic Region |
If the dizzy is on #1, and the O on the fan is in the notch, then you are good and the fan is not in the wrong place.
If you see no O with it at 10 o'clock on the dizzy/rotor, and it is gapped at .017, I don't know what to tell you. I have a white hash mark at TDC not a O, and the fan is mounted correctly. When I disconnect the hoses and have the light on #1, at 3500 the red mark marches perfectly into view. and the vacuum is almost rubbing the middle of the OIL Neck assembly on the dizzy side of the rectangular assembly.. I mean almost smack halfway. 10-15 degrees off may burn a piston or bend a valve. Did both once. Check to see by turning the fan by hand that you go 4.5 blades to the right from TDC looking at the fan from the timing hole and then you have the red hash mark. It is a little more than 4 blades to the right of TDC. I know this from rebuilding 2 2.0L's in the last 35 years. I will be doing one more sooner than later. Good luck! John |
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Posts in this topic
familienauto Timing too advanced Aug 12 2010, 05:05 PM
tod914 The timing light goes onto plug wire 1. As your s... Aug 12 2010, 05:14 PM familienauto Yep, got it on that plug wire, and verified that i... Aug 12 2010, 05:42 PM realred914 could be the distributor drive gear is not in the ... Aug 13 2010, 12:29 AM
type47
if this is not the case, then teh distributor di... Aug 13 2010, 07:46 AM
Vacca Rabite
now find the actual #1 TDC (ie piston one at full... Aug 13 2010, 08:10 AM r_towle I dont believe the fan can be mounted anyway but c... Aug 13 2010, 06:50 PM |
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