[cbnelson351]

Hey guys, this is my first post here and was wondering if someone might be able to help. My father in law has a 93 TRX300 that hasnt been running right for quite a while now. Typically it would start fine and idle fine, but once it warmed up it would die and wouldnt start again until it cooled down. I thought it just wasnt getting fuel so I cleaned up the carb the other day. After I got everything put back together I noticed that the spark plug is arcing on the engine block which seems to me is the reason it wont stay running. Anytime I hit the throttle it would start sparking on one of the cooling fins. I spliced on a new boot thinking that could be the problem and put dielectric grease on the stud. Had anyone experienced anything like this, or know what might fix it? Thanks for your help.

 

[wheeler]

Sounds to me like your coil. Classic sign is when it heats up it acts out. Cools down, fires back up. I would replace that along with a new wire, as you have already done the boot.

Welcome to the forums!!!!

 

[fishfiles]

did you put a new plug , it might be cracked ---- dielectric grease in the boot might help

 

[wheeler]

did you put a new plug , it might be cracked ---- dielectric grease in the boot might help

Good one fish..... Never thought of a cracked plug!

 

[cbnelson351]

Sounds to me like your coil. Classic sign is when it heats up it acts out. Cools down, fires back up. I would replace that along with a new wire, as you have already done the boot.

Welcome to the forums!!!!

Thanks for the welcome! I have a new coil on its way so hopefully that fixes the issue. I’ll try a new plug as well.
Thanks for your help.


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[cbnelson351]

did you put a new plug , it might be cracked ---- dielectric grease in the boot might help

I haven’t tried a new one yet, I’ll make sure to pick one up and try it.
Thanks for your help!


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[jdp]

I agree replace your coil and wire, also if you haven't seen, the NGK Iridium plug is alot better than the stock one. It's #DPR8EIX-9 Advance has it for 8.00 I think.

 

[_Wilson_]

+1 on an iridium plug ^^^

 

[cbnelson351]

I agree replace your coil and wire, also if you haven't seen, the NGK Iridium plug is alot better than the stock one. It's #DPR8EIX-9 Advance has it for 8.00 I think.

Sounds good, I’ll pick one of those up and try it. Thanks


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[jdp]

I agree replace your coil and wire, also if you haven't seen, the NGK Iridium plug is alot better than the stock one. It's #DPR8EIX-9 Advance has it for 8.00 I think.

Sounds good, I’ll pick one of those up and try it. Thanks


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I barely have to use the choke and when i do its only for 30 seconds and upto a minute in colder than 32*.

 

[_Wilson_]

Just tossing this in. If you use am fm radio or cb radio for trail talk, ngk iridium plugs will not cause much if any static issues, and + plus on cold weather starts! As JPD stated..... I hardly ever need to choke mine in the dead of winter.

 

[jdp]

Just tossing this in. If you use am fm radio or cb radio for trail talk, ngk iridium plugs will not cause much if any static issues, and + plus on cold weather starts! As JPD stated..... I hardly ever need to choke mine in the dead of winter.

Cause mine I had to tune it a little, when and ever since I had it when it was new from the PO it ran good for 5-10 sec on choke then would rev up like a rocket ship, until I figured out it wasnt getting enough fuel. So out on the idle screw until I got it to run right without revving up like mad. If it does go up when its warmed up it only goes 100 RPM or so. I know people dont think "pumping" them is needed but on mine it actually helps, just that little shot of fuel.

 

[_Wilson_]

I never had to adjust anything except idol speed, a simple twist of the knob changed the idol rpm, now she idols @ 1390 -or+ , AND another plus is hardly any soot at all (when i did the finger tail pipe test) I'm so happy with these NGK iridium plugs, i replaced the champian plug in the kohler ch395, briggs (virgin) 03 15 horse, no more oil fouling, I'm still waiting to see if nkg will come out with more of these, i need a few more, i def want one for my 039 stihl chainsaw, fs250r commercial brush cutter, mantis (honda powered) tiller, and my 97 custom xj jeep 4x4 , I'll never use another brand of plug! Period! I'd like to add i only have ngk on all of my small engines , some are standard NGK, @mrbb thank you!

 

[jdp]

I never had to adjust anything except idol speed, a simple twist of the knob changed the idol rpm, now she idols @ 1390 -or+ , AND another plus is hardly any soot at all (when i did the finger tail pipe test) I'm so happy with these NGK iridium plugs, i replaced the champian plug in the kohler ch395, briggs (virgin) 03 15 horse, no more oil fouling, I'm still waiting to see if nkg will come out with more of these, i need a few more, i def want one for my 039 stihl chainsaw, fs250r commercial brush cutter, mantis (honda powered) tiller, and my 97 custom xj jeep 4x4 , I'll never use another brand of plug! Period! I'd like to add i only have ngk on all of my small engines , some are standard NGK, @mrbb thank you!

E3 has a plug for saws and mowers, I'm running the E3.22 in our old Honda lawn mower and it runs good and starts better, burns less fuel.