Recent content by Highmarker

It has just over 500 miles on it. I bought it brand new in 2020. I have kept it maintained (ethanol-free gas only, kept oil level up, clean air filter, etc.) When I store it for the winter (up to 6 months), I put fuel stabilizer in it. I guess the best thing to do is check the compression...

I don't think it has an oil cooler. I don't see one in the parts list, unless it is part of the engine assembly.

By not screwing in the dipstick, this would put the end of the dipstick higher in the oil reservoir and therefore would require more oil to reach the end of the dipstick. I am worried, I would be adding even more oil than what I already have in there which I believe is overfilled already. Does...

The engine is in a pretty tight spot and my pictures didn't show much. The first picture (300cc Engine 1.jpg) shows the vent tube (on the far left). This is from the top part of the engine that goes to the air intake (downstream of the air filter) that sits on top of the engine toward the far...

I think that the oil dipstick is not accurate. I filled it with oil until it barely registers on the dipstick. But I think this is too much as the engine specs say 1.1 liters of oil and it takes at least 1.5 liters to register on the dipstick. Too much oil will cause it to pass through the...

I have a Trailmaster Challenger 300X-E. It has a EFI. I have been trying to figure out why it has a hard time starting and found that it gets flooded with excessive fuel through the EGR. I unhooked the EGR and it runs great. The problem is that with the EGR unhooked, it blows fuel/oil out...

The formal name of the kart is TrailMaster Challenger 300X-E. I also own a TrailMaster Challenger4 300X-E which is a 4 seater. However, I keep it up on my property in the mountains. I go up there about 2 - 3 times a month. I'm headed there this weekend, so I'll poke around and see if there are...

Here are a few pictures. The first one is of the dash with the green light shown to the left of the switches. The second is of the ECU with the open connection. My son drove it around yesterday and said the green light did not come back on after starting.

I took my air compressor to it and blew all the dust off the entire kart and especially around the engine and intake. I went around and check all the ground wires I could find. There was one that seemed a little loose next to the injector, so I made sure it was tight and wallah (viola) it...

Thanks Sid. I'll get to checking the injector nozzle and keep you posted.

I have a 2019 TrailMaster 300X-E (fuel injection). My son was driving it around in a pretty dusty area. It quit on him, and he couldn't get it started. I've cleaned the air filter and made sure the spark plug was producing a spark. Also tried spraying starting fluid, but to no avail. Please...