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About Ron Wolff
Expertise
I am proficient in the following areas of VW Air Cooled Models from 1968-1979: Vehicles: Super Beetle, Beetle, Thing, Karmann Ghia, Bus, Westfalia/Bus Areas of expertise years 1968-1979 Engine Rebuild advice for all air cooled engines VW Brake system replacement Automatic Stickshift transmission VW KOOL and DPD air conditioning systems (ex. thing) Westfalia Electrical system dual battery Westy Refridge Repair Westy Cabinet Repair Westy AFC Fuel Injection system (1975 bugs) (1975 bus/Westys) Soundproofing General type 4 engine rebuild/technical data (i.e. 1.7 ltr, 1.8., 2.0) for buses VW Air Cooled Beetle and Bus Paint codes VW Distributor Compatibility Information Westy component repair Emission Systems Exhaust Systems General Electric System Door rebuild (windows, seals, vent windows) Body Panel Removal and general repair (non-welded) Charging System Convertible top Installation: Beetle CV joints Engine Troubleshooting Valve Train Non areas of expertise: High Performance Modifications Front end related components Rear suspension (spring plate adjustment) Bodywork / painting

Experience

Past/Present clients
I often contribute to the westfalia users group technical boards. I have been a member for about 4 years. My usermame is 76Heatwagen
I restore vintage Volkswagens and currently own 4 of them.
 
   

You are here:  Experts > Shopping > Cars > Volkswagen > 1979 VW Beetle smoking issue

Topic: Volkswagen



Expert: Ron Wolff
Date: 9/7/2007
Subject: 1979 VW Beetle smoking issue

Question
QUESTION: Hey Ron,
I just purchased a 1979 VW Conv. Beetle, it was sitting idle for 7 years or so. I got a new battery and well it started but  does not idle. It dies, i changed out the head temp sensor, replaced spark plugs, wires, rotor, and cap.  It starts now but idles rough and a lot of smoke comes out the exhaust pipes. I also noticed that looks like  black sooth comes out the exhaust. What does this mean? Thanks in advance

ANSWER: Hey Armando,

Congratulations on your purchase.

I would suggest a couple things:

1) Drain the fuel and replace it with new.
2) If it is '79, it should be fuel injected, so replace the fuel filter under the gas tank.
3) Change the oil
4) Adjust the valves (Very Important)
5) Adjust the timing
6) Replace the belt (even if it looks new)

The soot is most likely just carbon from it sitting for so long.

These steps should make your VW road worthy and stop it from stalling out.

Best of luck, and let me know if I can help you any further.

Thanks,

Ron

---------- FOLLOW-UP ----------

QUESTION: Thanks Ron,
Well as soon as I took of the valve covers, I noticed that a pushrod (intake) had come off the rocker. What does this mean, or why did it happen? The pushrod was not bent, I rolled it on a piece of glass and rolled smoothly but I am concerned about a dent it made on the pushrod tube. Well I posted a topic on the Samba forums. Here is the post: (viewtopic.php?t=252230 for some reason it wont let me post a full address) . Another quick question, I read on your previous post that you might have schematics for DPD air conditioner, the bug has a complete system but does not turn on. If you could email them to me.
Thanks again Ron

Armando

Answer
Armando:

The pushrod most likely came off the rocker because the valves were in poor adjustment, or the valve train was loose.

YOU ARE VERY SMART for being concerned about the pushrod tube being bent.  Here is why:  Bent pushrod tubes often end having a hole 'rubbed' through it by the up and down motion of the pushrod.  

If this happens, all of the oil leaks from your motor, and it basically is shot.

Here is the suggested remedy:

1) Check the torque on the heads on make sure they are ok.  If you do not want to take the cylinder head off, cut out the bent alumiunum pushrod tube, remove the end seals and purchase a pushrod tube that you can install without having to pull the head. (they are spring-loaded, adjustable).  You can purchase them at www.mamotorworks.com/vw

2) Remove the two 13MM nuts that hold on the valve train and put the push rod back in.  Torque the valve train to specs. in your handy VW book.

3) Perform a complete valve adjustment on both sides.

4) Check your valves when cold at the following intervals: 200 Miles, 500 Miles, 1,000 Miles, than every 2K.  The purpose for this is to make sure that none of the valves are stretching or receding in thier seats.

As far as the A/C goes: e-mail me at ronwolffjr@hotmail.com and I will send you the DPD specs when I have an opportunity.

Good catch with the valves, you probably saved your motor.

Take Care,

Ron

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