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Post by Milkman on Apr 21, 2007 9:54:09 GMT -5
Put my '66 beetle back on the road today. I just finished replacing the distributor with a 019 W/pertronics, new spark plugs. Set the timing at 30 degrees total advance at 3000RPM. Synced the dual webber 34 ICT's & set the idle at 850RPM. It starts ok, idles a touch rough, but decent. It revs up poorly & bogs out at about 3200RPM, pops a bit from the carbs (both a different times) Just put in a tank of fresh fuel too! What could my problem be? The only thing I havn't done is adjust the valves yet, but I did that before I parked it in the fall? Any ideas? She can barely get over 60kph right now!
Greg
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Post by Milkman on Apr 21, 2007 17:39:00 GMT -5
Ok, I'm going to start at the begining so that you know what has been done....
1966 Beetle, 1600dp, dual 34 ICT Webbers, 009. Parked last fall, minimum amount of fuel, added fuel conditioner, stored all winter indoors. Started up frequently during the winter, ran perfect.
2 days ago, taken out of storage & ran perfect. Filled tank with fresh fuel. Removed carbs & manifolds, changed spark plugs. Re-installed carbs with new manifold gaskets. Changed linkage arms to shorter ones. Replaced all fuel lines & filter. Swapped 009 to a 019 with pertronics. New blue coil. Set timing, synced carbs. Runs like crap under load, idles fine & revs up ok, but with a stutter.
Today. Set valves, some were tight, some work ok but generally all were good. Double & triple checked timing, good. Tried different total advance settings, no change. Double & triple checked carbs, good. Or at least close. Swapped the 009 back in as someone recomened, no change. Put the old blue coil back on, no change. Tried another set of plug wires, no change.
When I test drove it seemed to pop from the L.H carb & tail pipe. Sounds like a lean back fire. Also noted I was running a little hot according to the CHT gauge, around 400. Sprayed a little brake clean around both carbs where they met the manifolds & where the manifolds meet the heads. Seems like the idle goes up a touch when I spray the L.H. manifold/head. So obviously I created a vacuum leak when I had the carbs off. I will be repairing that next. I remember having to notch the R.H. intake slightly where it met the head when I originally installed these carbs, maybe I have to do that to the L.H. side as well.
Would that vacuum leak cause this thing to run as poor as it does? I can barely break 60kph & it takes a LONG time to get up to that speed.
-Greg
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Post by riffraff on Apr 22, 2007 9:29:23 GMT -5
OK, so it was running just fine last fall when you parked it?
Ran fine during periodic start ups and fine this spring until you filled it up and changed out the components listed?
If all that is true, I still vote for jet issues. Not the sizing, but plugging. I wonder if there was enough tiny pieces of crap in the new fuel line that got lodged in the
jet(s) of the offending carb.
It can't hurt to pull the jets and blow them out with compressed air. If nothing else, you can eliminate that possibility from the list of possible causes.
Rotsa Ruck Ferra!
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Post by commercialair on Apr 22, 2007 9:34:52 GMT -5
OK, so it was running just fine last fall when you parked it? Ran fine during periodic start ups and fine this spring until you filled it up and changed out the components listed? If all that is true, I still vote for jet issues. Not the sizing, but plugging. I wonder if there was enough tiny pieces of crap in the new fuel line that got lodged in the jet(s) of the offending carb. It can't hurt to pull the jets and blow them out with compressed air. If nothing else, you can eliminate that possibility from the list of possible causes. Rotsa Ruck Ferra! Sounds like a solid idea.^^^^^^^ When I first started reading your post I thought it may be fuel filter related. But, you've already swapped that out??? You'll find it Greg. Good luck, Chris |
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Post by Milkman on Apr 22, 2007 11:06:34 GMT -5
Thanks guys! That will be todays project. I was in the garage until midnight last night taking care of the vacuum leak. Pulled the L.H. carb & manifold off. Took out the gasket & set the manifold back in. Sure enough, didn't sit flat on the head. There is a small raised boss that protrudes enough to keep the manifold from sitting flat. A few seconds on the bench grinder with the manifold took care of that issue! ;D Still runs terrible, but no more popping out the carb. Time to check timing & tuning again & blow those jets out....
-Greg
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rico
Slightly NUTS
Posts: 44
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Post by rico on Apr 22, 2007 12:21:15 GMT -5
accelerator pump, diaphram?
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Post by Mowser on Apr 22, 2007 16:18:58 GMT -5
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Post by Milkman on Apr 22, 2007 18:48:59 GMT -5
Thanks Mowser, I went & updated my post there. I've been dying to get out to the garage all day, but the fiancee' wanted to go shopping for a new dining room table. 6 hours later we finally picked one out. The second one we saw all day.....  Oh well! ;D Now that over I can get back to it. It might be a day or 2, but I'll post what I find. Greg |
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Post by Milkman on Apr 30, 2007 18:16:27 GMT -5
Well I finally got it figures, just not sure exactly what I did. Started it up & started pulling off plug wires to see what would happen. Guess what? The engine was only running on the 2 L.H. Cylinders! How weird is that. Didn't seem to be a fuel problem, but I had to take the carbs off to pull the plugs & wires, so I took out the jets & blew them out anyway. Plugs were good, so I installed a brand new set of Bosch plug wires & took off the new crap Taylor ones that were on there. Re-assembled & fired up. Perfect! Finally runs proper. Did a base carb sync & set the timing. Went for a little tear around the block, back to normal! Now I just need to take care of the cooked R.R. wheel bearing & the rear brakes. Never ends does it? ;D Good thing I love my VW's! -Greg |
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