Hi All,

I went out flying this afternoon, what a beautiful day. Had several successful flights. But I was having some issues with my engine. It is a Thunder Tiger 46 Pro. What happened, I had a bumpy landing and after it got on the ground I tried to throttle up to taxi back. I bumped the throttle but nothing happened, I could tell the engine was still running. Tried it again - no go. So I slowly moved the throttle and then it throttled up. I took the plane back to the pits and after a couple throttle ups, the problem seemed to clear up so I went for another flight. While the plane was in the air I could hear the engine surging. I decided to land and try to figure it out. I tried to start it back up and now it was having trouble starting up, so I played with high speed and finally got it to start. Took it for another flight and it still surged. Gave up for the day and decided to see what you guys think is wrong. Up until this point the engine was running perfect.

Some people at the field think it could be the glow plug, others think it is the low speed. Any suggestions would help.

Thanks.

Ryan

How bumpy was the 1st landing. The fuel pickup did not flop up to the front of the tank.

Cheers

Even if the fuel Pickup did flop to the front of the tank, there is lots of fuel so that really shouldn't matter. Or are you thinking the line got kinked?

Kinked or restricted.

Cheers.

a stupid question but is the throttle barrell itseld turning or just the arm on the throttlesometimes they can get loose probably not the problem but something to check or is the throttle body sliding in and out

A pinched internal pickup line from a hard landing or sudden stoppage as already indicated by the Ghost is a very common occurance and your description of what happened fits the profile perfectly.

Sounds to me like your low end is too rich

Hey,

I think I found my problem. I did some testing on my fuel delivery system and found that it was not delivering properly - like there was a kink. I removed the fuel tank and sure enough the line to the carb had a kink in it. It was kinked right where the tubing attaches to the brass tubing on the tank. Thanks for your help. I am going to replace the fuel tubing is there anything I can do to prevent this from happening in the future?

Thanks

dont land hard??! LOL [&:]

Hey RDMoore... You could use a shorter piece of tubing at the
tank inlet then use a piece of brass tubing then another short
piece of tubing to attach the clunk.. This will allow the clunk to
move around at the tanks end but won't allow it to curl to the
front of the tank... If you do this you need to use the tubing
clamps or wire tie them so the tubing won't slide loose...

This was on the outside of the tank not the inside. Think I will try to route the tubing so there are no sharp angles and hopefully the problem will not occur in the future and yes eliminate the hard landings too!!!

-Ryan

Sorry Ryan, miss read your post:-(... I had the same
problem on one of my planes, I just "curved" the tubing
and no more problems...

You could always add more packing at the front of the tank to stop the tank from moving forward.

Cheers.