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Someone to do a dual-carb balance and tune up?
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jordank



Joined: 03 Apr 2008
Posts: 43
Location: Coeur d'Alene, ID

PostPosted: Tue May 13, 2008 11:13 am    Post subject: Someone to do a dual-carb balance and tune up? Reply with quote

I need a mechanic to help with a tune-up of my 1600 dual-carb. The carbs look to be Solex.

http://www.rcvwclub.org/phpBB2/album_pic.php?pic_id=130

It currently runs fine, good power, idles perfectly, and the timing seems to be spot on, but I am getting a few exhaust backfires when down-shifting, so I suspect it's running a little lean (a tune or larger jets needed?), or the carbs are not balanced.

anyone that can have a look at the carbs for me, or anyone you would recommend?

thanks,
jordan

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jengel451



Joined: 11 Jun 2007
Posts: 232
Location: Greenacres, WA (yeah, like the show)

PostPosted: Tue May 13, 2008 11:25 am    Post subject: Reply with quote

if it's popping out the exhaust when decelerating, or between shifts, it may be an exhaust leak.

Balance issues will sometimes pop out the carb, or it will stumble badly when accelerating.
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jordank



Joined: 03 Apr 2008
Posts: 43
Location: Coeur d'Alene, ID

PostPosted: Tue May 13, 2008 11:33 am    Post subject: Reply with quote

yeah, it does have a bit of a flat spot on acceleration too... especially when not warmed up yet...

I'll check for exhaust leaks... I did change the exhaust on it, though it was backfiring even with the old exhaust...

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1957 Beetle
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jengel451



Joined: 11 Jun 2007
Posts: 232
Location: Greenacres, WA (yeah, like the show)

PostPosted: Tue May 13, 2008 1:40 pm    Post subject: Reply with quote

for grins, pull the plugs and take a look at the color of them. Report back!

BTW, just looked at your picture, I think you should rethink the fan belt install, I don't think the filter cover can take the revs like that! Wink
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jordank



Joined: 03 Apr 2008
Posts: 43
Location: Coeur d'Alene, ID

PostPosted: Tue May 13, 2008 1:58 pm    Post subject: Reply with quote

jengel451 wrote:


BTW, just looked at your picture, I think you should rethink the fan belt install, I don't think the filter cover can take the revs like that! Wink


Yeah... that was in the midst of setting it up for full flow, done about a month ago... The full story is here, if anyone has time to waste:

http://www.thesamba.com/vw/forum/viewtopic.php?t=288955

was the best picture of the carb/linkages setup I could find Wink...

I'll pull the plugs this weekend and see what the verdict is...

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1957 Beetle
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RichM



Joined: 20 Jan 2008
Posts: 123
Location: Hayden, Idaho

PostPosted: Sat May 17, 2008 7:34 am    Post subject: Tool Reply with quote

I have the sync tool that you can borrow If youd like to try it yourself.

Rich

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69 Jim



Joined: 02 Jun 2007
Posts: 13
Location: Nine Mile Falls

PostPosted: Sat May 17, 2008 12:26 pm    Post subject: Reply with quote

Give this page a look. I'm sure it will explain a lot.

http://www.lowbugget.com/main_page.html
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mdmatt73



Joined: 05 Apr 2008
Posts: 12
Location: Chewelah,WA

PostPosted: Sun Jun 01, 2008 11:58 am    Post subject: Reply with quote

If all else fails, go and see Mike at Mitchels garage in Spokane,WA. Awsome mechanic. 509-483-1867 and tell him that Matt Russell sent you. I emailed Troy Hobbs in regards of a great and honest mechanic and he recommended him big time. Good luck!
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grim reaper



Joined: 26 Mar 2007
Posts: 254
Location: Spokompton

PostPosted: Sun Jun 01, 2008 2:20 pm    Post subject: Reply with quote

Mike at Mitchels is a rad guy.I always feel like my vw's are in safe hands there.he is not my main mechanic because he is just a bit out of the way but I do like his service when i do get it.
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jordank



Joined: 03 Apr 2008
Posts: 43
Location: Coeur d'Alene, ID

PostPosted: Mon Jun 02, 2008 9:15 am    Post subject: Reply with quote

Still haven't gotten to pulling the plugs out yet Sad - was busy installing my new oil pressure and oil temp gauges this weekend.

Drove around the CDA lake on saturday, the backfires still happening, mostly when down-gearing, with foot off the gas pedal... It also seems I now have a little oil leak off the front oil seal... frustrating...

I'll try to pull the plugs tonight, and if they look good and there is no other obvious explanation - I'll try to take it to Mitchels. Thanks for the recommendation.

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1964 Beetle
1958 Karmann Ghia
1957 Beetle
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mdmatt73



Joined: 05 Apr 2008
Posts: 12
Location: Chewelah,WA

PostPosted: Mon Jun 02, 2008 2:37 pm    Post subject: Reply with quote

Hey no prob jordank. Hope things go well and you solve your problem. Best of luck. VW dubs forever
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CustomVW



Joined: 13 Oct 2006
Posts: 323
Location: Hillyard off market st. and gordon

PostPosted: Tue Jun 03, 2008 5:58 am    Post subject: Reply with quote

wait, backfiring when you let off the gas and decel? too rich, and has a small exhusat leak. the hot gas coming out is getting air from the leak and igniting.

I'd adjust your carbs, but it appears someone has walked away with my sycronometer, and I now have to wait three days for a new set. It really suck becuase I just built a 1915, and it's waiting to come to life.
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jengel451



Joined: 11 Jun 2007
Posts: 232
Location: Greenacres, WA (yeah, like the show)

PostPosted: Tue Jun 03, 2008 7:26 am    Post subject: Reply with quote

I can swing by with my snail if you can round up 2 alternator woodruff keys. (I dropped them and they both turned into air when they hit the ground)
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CustomVW



Joined: 13 Oct 2006
Posts: 323
Location: Hillyard off market st. and gordon

PostPosted: Tue Jun 03, 2008 8:58 pm    Post subject: Reply with quote

I hate it when small pieces go missing.
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CustomVW



Joined: 13 Oct 2006
Posts: 323
Location: Hillyard off market st. and gordon

PostPosted: Fri Jun 06, 2008 7:54 pm    Post subject: Reply with quote

hey...big thanks Jim, I ordered another squirrel cage, so when it comes in, I'll prolly find my old one.
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