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Reply with quote  #1 

We recently purchased a non-running 68 bug for our dtr to use as a daily driver. The motor turns over very slowly, kinda like the battery is going dead but the battery is good. I have power to the coil and the distributor but no spark to the plugs. The starter checked out ok at a local shop today. Any other suggestions?

68autobug

VW Guru
Registered: 02/20/04
Posts: 1,907
Reply with quote  #2 

It could be many things -

but sounds like the engine has a problem...

Maybe the engine has been seized and the pistons and cylinders are badly scored...

Best to pull the engine apart to see what the problem is...

 

although if the cylinders and pistons are scored they both will need replacing...  the pistons will be having a hard job going across the scoring... but usually , not all the pistons/cylinders will be damaged...

it only takes one to seize an engine.

 

also check the tappet clearances... and that the valves are opening and closing..

 

best of Luck

 

Lee -- 68AutoBug -- Australia --

 

http://community.webshots.com/user/vw68autobug

 

 

 


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NoH2O

VW Expert
Registered: 02/22/05
Posts: 565
Reply with quote  #3 

Congrats on the new ride! What all do you know about the car? Has it sat for a long period of time? You say you've got spark to the coil but not beyond. Did you try a new coil? Lee is correct, if it's been sitting awhile it could be partially seized up. It sounds though as if you've got spark issues as well.

 

Steve


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'63 Ragtop
'56 Ragtop
'78 Riviera camper


"..at least I'm enjoyin' the ride"


Reply with quote  #4 

It's been sitting for several years. Guy we purchased it from said one day it wouldn't start so he bought another car and left this one sitting, probably about 4-5 years. I know that's not good for them to sit like that but I really hope the engine is good. Thanks for the replies. I'll be posting more as we know very little about VW's.

MLTigger

VW Genius
Registered: 04/29/06
Posts: 362
Reply with quote  #5 

Check out your points & condensor if your not getting spark to the plugs.

Check the electrical connection to the starter make sure these are not corroded, maybe starter is tired/maybe you have engine problems

If it has been sitting for 4 or 5 years the fuel is probably bad, try spraying some carb cleaner or starting fluid into the carb(Keep a fire extinguisher handy.)  I'd change the fuel filter out and maybe drain the gas tank and add some new fuel.

 

Check the oil level if you haven't done so already.

 



Reply with quote  #6 

Thanks for the info. We have decided it just needs a good tune-up since the starter and the battery are both good. Gonna check everything out this week when the rain stops since we don't have a garage. I'll keep everyone posted and appreciate the replies. kjh9835

68autobug

VW Guru
Registered: 02/20/04
Posts: 1,907
Reply with quote  #7 

Hi again,

if its been sitting that long... [years]

the fuel will be bad...

it will need draining and renewing...

the carby may be full of gunk from the old fuel...

If You are lucky it may be OK... [the carby]

once you have spark, some new gas and it should go...

I had My beetle sitting for many years [after a total rebuild]

and water did get into a cylinder and the engine wouldn't turn over..

the bottom of the cylinder had a big clump of rust on it, but it cleaned up with a honing tool..

My Son, had the same problem too... but his car was in the open for a couple of years and one of his cylinders was badly rusted and the cylinder had to be renewed...

Take the spark plugs out and squirt a small amount of oil into the cylinders and then turn the engine over with the starter motor...

if it turns over OK with the plugs out it should work OK with them in and connected up...

or you could turn it over by hand with a spanner to get the oil circulated in the cylinders... [with the plugs still out]

probably better to try this first....

 

If You paint Your engine like this.... it will go better

 

Best of luck

 

Lee -- 68autobug -- Australia --

 

http://community.webshots.com/user/vw68autobug

 



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Reply with quote  #8 

Here's where we stand: have spark to the plugs, I know the rubber fuel lines are bad and it's not pumping gas from the tank. When I pulled the plugs to clean them, I noticed that the spark plugs on the driver's side had wires requiring the screw-on spark plug cap but none were on there. I cleaned and replaced the plugs after putting caps on them and now have fire to all 4 cylinders. I noticed the gap on all four plugs seemed very small, less than .0015. Does this seem right? While the plugs were out, I put a wrench on the cranknut and turned the engine over by hand. The engine would turn freely for a little bit after I quit applying force. I tried spraying a little starter fluid thru the carb after replaciing plugs and turned the engine over to see if it would fire. Still turns over slowly and didn't even act like it was attempting to start. The starter was good, the battery is good and I have cleaned alll the connector points. Thanks for any input you can offer us.

Kathy

68autobug

VW Guru
Registered: 02/20/04
Posts: 1,907
Reply with quote  #9 

 

Hi Kathy,

spark plugs should be .028 inches or .7mm Gap...

Yes, 0016" is a very small gap...

maybe the previous owner had problems...

check the coil to see that the + goes to power/ignition

and the - goes to the condenser / points...

as coils will work when connected up back to front, but not too well.

or the coil may need replacing....  not enough High voltage...

spray inside the dizzy cap , rotor button, and the coil etc with something like WD40 and wipe it clean...

make sure the little carbon button is still attached to the inside top of the dizzy cap.. if its missing, the spark can't get to the rotor button..

 

 

best of Luck

 

Lee -- 68AutoBug -- Australia --

 

http://community.webshots.com/user/vw68autobug

 


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Reply with quote  #10 

OK, so today I replaced the bad fuel lines and turned the engine over by hand til the #1 piston was at top dead center. I removed the distributor cap and checked to see at what point the points were opening. Seemed liked they were opening before top dead center, so I loosened the distributor cap and tried turning it a little by hand while turning over the engine. Seemed like it tried to fire once or twice but would not start. After a few times it got to where it would barely turn over so I stopped to let the battery charge again. Still have not replaced the plugs or plug wires but at least I see a little promise.
Kathy



Reply with quote  #11 

Changed the plugs with proper gap, replaced the fuel lines, adjusted the timing to where even turning over slowly it was trying to start. Push started her and Lucy was off and running....sort of.
After coming down the driveway with no brakes and slamming into the Mercury, we have another project to fix. I'll check the electrical connections one more time, locate the bushing and get it ordered and hopefully, she'll start on her own without having to be pushed. Thanks for all the great info/assistance!
Kathy

MLTigger

VW Genius
Registered: 04/29/06
Posts: 362
Reply with quote  #12 

Opps, brakes are important.  At least no one was hurt.

68autobug

VW Guru
Registered: 02/20/04
Posts: 1,907
Reply with quote  #13 

Hi,

 

Its strange, that when We need to pull the emergency [handbrake] on..

We never do....

at least thats what i have found....

 

of course, if you have driven a beetle up and down the driveway without any foot brakes.. a lot of times...

then it comes 2nd nature to pull the hand brake on...

 

but in Emergencies....

the human brain is just a bit too slow....??

 

I hope the beetle didn't get hurt....  [the Mercury can look after its self]

 

Lee -- 68autobug -- Australia --

 

http://community.webshops.com/user/vw68autobug

 

 


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68AutoBug - helping keep air cooled Volkswagens alive in Australia & around the World -

http://community.webshots.com/user/vw68autobug
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