no spark please help

[Jokerrw]

Looking for advice on an issue with my VW 1835 motor no spark. Any VW guru here? Last it ran was 2yrs ago coil fell out of it's holder and grounded out, pop fuse. After replacing the fuse and coil. Would not start, Very weak and intermediate spark. It had electronic ignition not a prertonix. changed to original points and condenser and no spark at all. I triple check gap .40 mm. Bought new pertronix electric ignition and flame thrower coil. No spark. I am getting 12v at coil, new wires,cap,rotor, hooked up test light to pos side and beg when cranked engine test light was flashing as I turned the engine over.
any advice
can I hook a plug wire straight to the coil and put a plug that is grounded to see if there is spark coming out of the coil?

[vwjetboat]

what have you tried ? got power going to coil ? check point gap ? filed reset ? new points & condenser ?

[Jokerrw]

I have replaced with new electronic ignition, coil, cap, rotor, wires, plugs verified getting 12v to pos side of coil. zero spark

[SamT]

Get us a pic of the wires as they attach to the coil. If the positive side is flashing the test light the wires are wrong. The negative side should flash when you crank, positive stays hot if the ignition is on.

Positive side of coil should be attached to ignition 12v wire, it's common to see it power other accessories like choke on the carb and stuff. Also the redwire from the petronix should go there.

Negative side of the coil powers the tach, black wire on petronix or trigger wire for the points.

If a petronix is hooked up in reverse it usually frys it.

Check your rotor, they have an internal resistor that can fry.
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[Jokerrw]

I am getting 12v to white wire

Yes when I put the test light ign turned on I get a light. When I crank the ing the test light flashes

[Dark Earth]

Are the intake and exhaust valves closed on the #1 cylinder when the distributor rotor is pointed at the #1 plug wire ?
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[Jokerrw]

here is the rotor at TEC

[Jokerrw]

Also checked new coil wire and 0.5 resistance on meter

[Dale M.]

[Jokerrw]

I will check timing with a light. Not 100% on fuel but i have been trying it with spray of starter fluid and tried pouring a little gas down both barrels.
I have also hooked a plug wire straight to coil and a grounded spark plug and no spark.

[Dale M.]

[Jokerrw]

I set the timing with the test light. Still no spark
This thing is driving me crazy. Everything shows good but still no spark. Even testing for spark in the dark hoping to see a faint spark nothing but darkness.

[Jokerrw]

Pos to neg 3.3 ohms
Pos to output secondary 10.64

[Dale M.]

[Jokerrw]

Yes 10.64k .
If I hooked up a spark plug to a plug wire straight to coil and a grounded spark plug, when I crank the motor I should get a spark?

[Dale M.]

[Jokerrw]

At first when tested I was getting down to 11.6v. So I hook up a commercial battery charger and am now getting 13.4 v at positive side when I crank the engine over.
Battery is grounded with a 1/2 bolt and yes the transaxle has grounding strap.

Thank you for taking the time to help me.

Ron

[Dale M.]

I suggest you go back to points and condenser (old distributor) and see if that solves issue...

Dale
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[Jokerrw]

Went back to points and condenser with condenser green wire connected to neg .Still no spark.. This is bugging me.
With points the wires connected to the coil is 1 green to neg and a 12v wire to the pos.

With elec ignition wires connected to the coil is neg is black from dist red from dist to pos. And 12v to pos.

Those should be the only wires connected to the coil
One green to neg if points
And 2 to pos and one to neg for electric ignition?

[pullstart]

This might be a wild idea, but have you bypassed the ignition switch and/or confirmed that while you're cranking that the coil still has voltage?

I've heard of in the past that if you have a poor connection (bad switch) that you can find "ghost" voltage... it's present but has no real amps to get the job done. Maybe jumper from the battery to the coil + and jump the starter solenoid to see what happens...
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