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gatorjos
Samba Member
Joined: April 19, 2003
Posts: 406
Location: San Francisco
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 Posted: Wed Sep 29, 2004 9:39 pm Post subject: Timing woes |
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This is the situation:
- just installed new AJ simms 40mm Kadrons on my ghia (stock 1600dp) tapped for vacuum
- got a brand new bosch 034 out of mexico from a dude on ebay (great deal at $70)
It ran like crap. I went out, bought a timing light and ended up setting the timing to 45 degrees ATDC...does this sound reasonable? It's supposed to be 32-34 with the 034....
yes, I disconnected the vac hose when timing.
yes, I adjusted the valves before all this.
yes, my Scat linkage is balanced pretty well.
Simms says his 034 gets sent out to change the advance curve...
It runs ok with it advanced as much as it is, but it still hesitates some when I step on it.
WTF? Help!
Thanks,
Jos
_________________
1977 Westfalia Weekender Berlin "The Kitebus" aka " Colonel Mustard"
Previous romances:
1972 Ghia cabriolet (full body-off restoration -- stolen after five years of ownership)
2004 Passat 1.8T (manual)
http://21stcenturyhobo.com |
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Doppelganger
Samba Member
Joined: May 30, 2004
Posts: 248
Location: Mid TN, SoCal native.
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| Posted: Thu Sep 30, 2004 4:39 am Post subject: |
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You mean before TDC? To the right or to the left of your TDC when the car is running? Did you check for proper draw on the vacuum port? Is the advance plate in the distributor itself freely moving (not binding anywhere)? Can you move the advance plate by blowing/sucking on the vacuum hose to the dizzy(not a joke)?
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Life starts at drop of the clutch. |
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caromin
Samba Member
Joined: December 27, 2003
Posts: 1171
Location: NM
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| Posted: Thu Sep 30, 2004 8:54 pm Post subject: |
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I just purchased the SVDA from ACN and according to the info John sent, the new rubber diaphram in the 034 vacuum canister will be stiff at first but should become more flexable in a 2 to 3 weeks of regular driving. That doesn't account for the timing but possibly the slight hesitation.
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59Rag
86 Westy
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Boo
Samba Member
Joined: September 14, 2004
Posts: 8
Location: So Cal.
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| Posted: Fri Oct 01, 2004 12:10 pm Post subject: |
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Gatorjos,
I installed the 034 for my Kads and I'm having simular problems to yours. My total advance is at 32-34 degrees and it pops & back-fires through the exhaust. It's subtle but it's there. Let me know if you come up with anything. |
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gatorjos
Samba Member
Joined: April 19, 2003
Posts: 406
Location: San Francisco
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| Posted: Sun Oct 03, 2004 5:46 pm Post subject: |
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So, the 45 degrees was a bit too much. Now I'm down to 36 BTDC. It's a brand new 034, but I sucked on it too make sure if the plate moves, and it does. It's running a lot better, but I'm still having to keep the Revs up between shifts to not have hesitation. I like the breaking in the diaphragm theory. I'll drive it the way it is for a while, and keep you guys updated if it the low rpm stumble goes away....
Thanks for the replies.
Jos
_________________
1977 Westfalia Weekender Berlin "The Kitebus" aka " Colonel Mustard"
Previous romances:
1972 Ghia cabriolet (full body-off restoration -- stolen after five years of ownership)
2004 Passat 1.8T (manual)
http://21stcenturyhobo.com |
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