What the **** do i do now???

[92slc]

Ive adjusted the valves 4 times. (used the pencil trick to find TDC)
Ive spent hours, and hours, and hours adjusting the carb.
I went out and bought that distributor you told me to get.

I set the points on the dwell and they are at about 44 to 45 degrees

I HAVE NO IDEA what else to do. Ive spent so much money, and time working with the timing, the carb, and valves. and it still bucks like a bronco the way it did 5 minutes after I first got the thing running.

timing is set to 7.5 degrees BTDC right?

im just so worn out and SICK of this engine. Ive timed and tuned plenty of 1600DP's and never have I had this much trouble with ANY of them. the worst fucking flat spots i have ever dealt.

[Calex59]

Just out of curiosity, and for no other reason, what type carb and distributor do you have? I have a dual vacuum dizzy that is a bitch to set.

Now, just a little comment here. Some 1600s have to be set to 5 ATDC,depending on the model year ect. Try this link, Http://www.aircooled.net and check out their technical pages, they have one on distributors and carbs that might help. The chilton manual , which I don't generally consider very good, has an excellent table that lists all the timing for most type 1s.

I hate to give advice because you have probably done everything humanly possible

[92slc]

[propflux01]

What plugs are you using?
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[Glenn]

The 34PICT-3 can be difficult to tune. Do you have a experienced VW mechanic locally you can bring it to?

It might be worth paying an hour of his time.
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Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"

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[Joey]

Incorrect timing or carb tuning shouldn't cause "bucking". Sounds like the firing order may not be correct or yuo may have a dead spark plug or plug wire.
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Joey

‘60 Kombi - '74 Bus - '79 Panel - '65 Beetle

[92slc]

heres the way it is right now. the small screw is out about 2 and 3/4 of a turn. and the big screw is out about 1/2 of a turn.

let me just double check that with the new dizzy i just threw in the timing is now set to 7.5 BTDC right?

[92slc]

[Glenn]

[92slc]

looking at the distributor this is how the firing order is set right now

front of the car
2 1
0
3 4

[92slc]

[Glenn]

Don't assume... the distributor has a mark on the top edge that is the location of #1. It's not always as the same location on different distributors.

Here's the location of the cylinders.

Make sure the spark plug wire from #1 goes to the #1 on the distributor. Then going COUNTER CLOCKWISE put on #2, then #3 and finally #4.

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Personally if you have the wires on wrong, the engine won't run.
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Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"

Member #1009

#BlueSquare

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[Joey]

[Bugs69]

92slc,

As a Newby, I've felt the same frustration. Let me suggest that you just lay down the wrenches, back away from the car for a bit, rethink what you have done and the sequence of the tune. Valves, dwell, timing, carb. Review http://www.vw-resource.com/carb.html#pierburg

I have to remind myself of the KISS, Keep it Simple. It's often a simple thing I've overlooked.

A few questions:

You said the engine was "bucking". Is it not idling smooth? Is it missing? Plug wire on distributor reversed? How are your plug wires, rotor, distributor cap? Is it "bucking" at startup or after warm up?

Just a few ideas from a Newby.

[74Standard]

The most basic definition of crazy is doing the same thing over and over and expecting different results.

You need to start suspecting other things, like wires, cap, rotor and/or plugs. If you have timed it, adjusted the valves, adjusted the carb and you are still getting the same "bucking". Guess what, I really doubt it's any of those items that is causing it, or you have done it incorrectly each time.

Maybe you carb has junk in it, maybe your fuel filter is getting clogged, maybe one of your plugs is fouled. Plugs are cheap. Wires are more. Cap and rotor are reasonable. Something else is causing it...

"Bucking" is often confused with a "miss"... just a thought. Especially in a 4cyl engine.

[92slc]

okay I forgot that the single advance is timed plugged up. Ive been doing it with my old dual connected previously.

Now the bypass screw isnt supposed to be out as far as I have it out? (half a turn) how far does it usually come out?

does the small screw usually come out about 2 1/2-3/4 like i have it set right now?

[Rowroy]

I had a similar problem with my H30/31 carb some time ago. The problem turned out to be a piece of debris in the main jet. Have you tried removing the carb jets and blowing them out w/ compressed air (along with all of the passages in the carb)?

You mentioned that going up hills was a nightmare. This makes me think that as you give it more gas you are getting more into the main circuit. Hence, your trouble.
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[Joey]

[mnussbau]

[Joey]