Left side spark plug dies rd400

rd400greenhorn · September 13, 2020, 02:10:57 AM

Allright, anyone with ideas on this issue.?

I have proberly gone 50km so far on the rd400, and changed the left side sparkplug twice.
It just gives up, yesterday it started to 4 stroke and -'shot' out of the left exhaust, i thought might ss well try.
Took the spark plug out ( Black,) and it worked again.

Arrow · September 13, 2020, 06:09:21 AM

Have you had the brass balls out of the carbs, to clean the fixed air jets? I had the exact same thing on my 250E. Initially I got a replacement carb. body off a mate and it cured the problem completely.

Sent from my SM-G973F using Tapatalk

quocle603 · September 13, 2020, 06:29:48 AM

Check and clean your carb. I kept on fouling plugs but was able to figure out it was carb related.

rd400greenhorn · September 13, 2020, 06:35:07 AM

The bike has 34mm TM flat slides

What could do it do you say

rodneya · September 13, 2020, 12:05:13 PM

what needle and needle jet are you running?

rd400greenhorn · September 13, 2020, 02:00:17 PM

Iam. Not sure really
Chuck sent me a setup i should go with, havent really done Any adjusting since

rodneya · September 13, 2020, 02:26:02 PM

Quote from: rd400greenhorn on September 13, 2020, 02:00:17 PM
Iam. Not sure really
Chuck sent me a setup i should go with, havent really done Any adjusting since

On my water cooled motor with TM34'sI changed the stock needle jets to a leaner Q0 and I was still so rich in midrange that I had to jet right down to get it to stop spluttering and get onto the pipe that I would be lean at WOT. Even with the needle at #1 clip.
Changed to P8 needle jets and its better, but still a bit rich.

Are your carbs synced?

rd400greenhorn · September 13, 2020, 02:49:00 PM

Carbs are not synced, just changed the jets /needle? Cant remeber
But what Chuck quenzler sent me and go.

But I do notice Its wet under the carb, left side, as well as Its left side the spark plug dies.

Not sure what does it in the carb,

Dvsrd · September 13, 2020, 05:01:50 PM

Quote from: rd400greenhorn on September 13, 2020, 02:49:00 PM
Carbs are not synced, just changed the jets /needle? Cant remeber
But what Chuck quenzler sent me and go.

But I do notice Its wet under the carb, left side, as well as Its left side the spark plug dies.

Not sure what does it in the carb,

Incorrect float level or dirt in float valve. Will cause rich condition. Please get the basic settings correct, incl. all jetting info.

News:

Left side spark plug dies rd400