 Carburetor throats stopped matching |
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| 98101 |
 Jan 7 2018, 11:07 PM
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Michael in Seattle  Group: Members Posts: 373 Joined: 7-October 17 From: Seattle, WA Member No.: 21,495 Region Association: Pacific Northwest  |
I pulled the carbs to install a new linkage, and blew out the jets while I was at it. The two carbs are synchronized with each other better than they've ever been, but now there's a discrepancy within one of the carbs (DRLA 45s). I'm wondering if I bent a throttle plate, or if there's something else I did that could cause this?
The lower one is cylinder 3, if that matters. There was a slight discrepancy before, but now they're further apart.  |
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| MarkV |
Jan 9 2018, 08:24 PM
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Fear the Jack Stands Group: Members Posts: 1,493 Joined: 15-January 03 From: Sunny Tucson, AZ Member No.: 154 Region Association: None |
QUOTE(98101 @ Jan 9 2018, 05:02 PM)  QUOTE(MarkV @ Jan 8 2018, 06:26 PM) I only have one meter so this may seem obvious .... have you tried using one meter and going from throat to throat with it? (IMG:style_emoticons/default/confused24.gif) How does the car run ? Yes -- the VW mechanic had just one meter and used your technique. It was running awful, backfiring several times per block, unable to hold idle until I advanced the timing to 30ยบ at 1000. I don't think that one throat was the only problem. QUOTE(rhodyguy @ Jan 8 2018, 06:52 PM) 3 read just to 3 and 1 to just past 5 with the by passes closed? That's right. To make a long story short, I have new old-stock Dellortos now and all the drivability problems are gone. I'll write more details on the other thread. Sounds like you are getting close to having it dialed in. New old-stock Dellortos are the carbs that came on the car? I am a little stumped by all of the timing....30 degrees at an idle and 39 degrees total? (IMG:style_emoticons/default/smilie_pokal.gif) |
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Posts in this topic
98101 Carburetor throats stopped matching Jan 7 2018, 11:07 PM
stugray An intake leak would do that.
Spray some WD40 (or... Jan 7 2018, 11:34 PM
98101
An intake leak would do that.
Spray some WD40 (o... Jan 7 2018, 11:38 PM 98101 With the carburetor on the engine, I was not able ... Jan 8 2018, 06:02 AM ottox914 Back to basics but did you check the adjustment sc... Jan 8 2018, 07:04 AM rhodyguy Are the air by pass screws in the same adjustment ... Jan 8 2018, 08:19 AM rhodyguy I just finished up trying to find the pre-install ... Jan 8 2018, 12:09 PM 98101
I just finished up trying to find the pre-install... Jan 8 2018, 08:13 PM nditiz1 :agree:
Check the air bypass.
I was having a sim... Jan 8 2018, 12:37 PM 98101 Thank you everyone. Indeed the air bypass screws ... Jan 8 2018, 08:06 PM MarkV Strange? Mine are off by a little from one throat ... Jan 8 2018, 08:13 PM MarkV
Thank you everyone. Indeed the air bypass screws... Jan 8 2018, 08:16 PM MarkV I only have one meter so this may seem obvious ...... Jan 8 2018, 08:26 PM 98101
I only have one meter so this may seem obvious ..... Jan 9 2018, 06:02 PM rhodyguy 3 read just to 3 and 1 to just past 5 with the by ... Jan 8 2018, 08:52 PM 98101
Sounds like you are getting close to having it di... Jan 9 2018, 11:36 PM |
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