CA77 spark issue

Mkaz54 · Post by **Mkaz54** » Sat Aug 19, 2017 6:21 pm

Hi guys, I'm new here and I'm hoping someone can help.
I have ... I think it's a 1965? Honda dream 305, I just finished refurbishing it a few days ago, except the motor. All I did there was clean the carburetor and get new plugs. Here's the problem, it's only getting spark on the right side (normal), the left side only with a fresh plug and it only last a short time. I've checked the points, and timing 2 million times, (point setting .014)( plug setting .026)( timing is set on "F") I switched the plugs wires... left wire went to the right, and right wire went to the left. thinking the problem should follow. Not the case, and I think that's kinda weird that the problem stayed the same. Spark on the right side only, when I pull the plug from the left side and hold it near the head, spark will arc. But when I ground the plug....no spark. has anyone else ever have this problem? If so, please share it .

Thank you all and I'm sorry my question was so long
Mike

LOUD MOUSE · Post by **LOUD MOUSE** » Sat Aug 19, 2017 6:56 pm

Things in order.
Please show your location at the sign in page.
What type coil do you have?
Metal or Cast resin?
If metal did you cut 3/8 inch off each end of both wires.
If resin cut the plug ends back.
As I recall when you get spark while holding a GAP the plug is fouled.
OTHERS, ....................lm

Mkaz54 wrote:Hi guys, I'm new here and I'm hoping someone can help.
I have ... I think it's a 1965? Honda dream 305, I just finished refurbishing it a few days ago, except the motor. All I did there was clean the carburetor and get new plugs. Here's the problem, it's only getting spark on the right side (normal), the left side only with a fresh plug and it only last a short time. I've checked the points, and timing 2 million times, (point setting .014)( plug setting .026)( timing is set on "F") I switched the plugs wires... left wire went to the right, and right wire went to the left. thinking the problem should follow. Not the case, and I think that's kinda weird that the problem stayed the same. Spark on the right side only, when I pull the plug from the left side and hold it near the head, spark will arc. But when I ground the plug....no spark. has anyone else ever have this problem? If so, please share it .

Thank you all and I'm sorry my question was so long
Mike

Mkaz54 · Post by **Mkaz54** » Sat Aug 19, 2017 7:09 pm

The coil is original, looks to be plastic

Muddy · Post by **Muddy** » Sat Aug 19, 2017 8:59 pm

Mkaz54 wrote:... the left side only with a fresh plug and it only last a short time. ...

G'day Mkaz54

Does this mean that the plug is carboning up? A build-up of soot or carbon can create a short circuit and the plug often will not spark.

As Loud Mouse will say, also check the valve timing as well as the ignition timing.

I chased a fine looking carbuerettor running rich around and around for a long time before replacing the carb and now it appears to be running fine.

Maybe post some photos of the plugs once they stop firing - people will be able to tell if it is running rich, burning oil or running fine.

LOUD MOUSE · Post by **LOUD MOUSE** » Sat Aug 19, 2017 9:20 pm

MUDDY he has a NO SPARK problem one side.. ....................lm

Muddy wrote:
Mkaz54 wrote:... the left side only with a fresh plug and it only last a short time. ...

G'day Mkaz54

Does this mean that the plug is carboning up? A build-up of soot or carbon can create a short circuit and the plug often will not spark.

As Loud Mouse will say, also check the valve timing as well as the ignition timing.

I chased a fine looking carbuerettor running rich around and around for a long time before replacing the carb and now it appears to be running fine.

Maybe post some photos of the plugs once they stop firing - people will be able to tell if it is running rich, burning oil or running fine.

Mkaz54 · Post by **Mkaz54** » Sat Aug 19, 2017 9:27 pm

Thanks muddy,
The plug thats not firing is soaked with fuel, I was playing with it a little more tonight and put in a fresh plug. It started right up and was running good at high rpm's, when I try and let it idle.... the left side stops firing. I can tell by the sound and looking at the tailpipe, when I give it gas, it comes back on....I'm sratching my head.

LOUD MOUSE · Post by **LOUD MOUSE** » Sat Aug 19, 2017 9:28 pm

Now check your compression on that side. ...............lm

Mkaz54 wrote:Thanks muddy,
The plug thats not firing is soaked with fuel, I was playing with it a little more tonight and put in a fresh plug. It started right up and was running good at high rpm's, when I try and let it idle.... the left side stops firing. I can tell by the sound and looking at the tailpipe, when I give it gas, it comes back on....I'm sratching my head.

Honda305.com Forum

honda305.com Forum

CA77 spark issue

CA77 spark issue

Re: CA77 spark issue

Re: CA77 spark issue

Re: CA77 spark issue