Author Topic: Starting issues (Read 6861 times)

dustin250r312 · « **on:** August 03, 2014, 12:46:06 AM »

Hi I have a 86 trx250r that has a airstriker carb on it that was done by bdt motorsports I've had a problem with it starting running I've tried setting all the needle pin settings and never stays running as soon as I give it has it Boggs out also tried switching to the stock carb and did the same thing if any help would be great thanks Dustin

wretched73 · « **Reply #1 on:** August 03, 2014, 08:55:42 AM »

Check all you electrical connections. Especially the ground. I had similar issues and my ground connection was corroded

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DnB_Racing · « **Reply #2 on:** August 03, 2014, 09:16:44 AM »

as mentioned check connections, including the plug cap also make sure you are getting plenty of fuel to the carb,

dustin250r312 · « **Reply #3 on:** August 03, 2014, 09:27:40 AM »

All wires and connections are good and not corroded just rebuilt it from ground up and it seems like it's getting to much fuel cuz it's spitting gas out the exhaust flange in the front and i always have to have the throttle kinda turned to keep it running could it have to do with my throttle not being right? I have a twist throttle on it

rsss396 · « **Reply #4 on:** August 03, 2014, 09:37:45 AM »

you need to pull the carb and see what jets are in so you can compare to other setups.
I would also check the float adjustment if the float level is to high it make the bike run very rich with fuel

dustin250r312 · « **Reply #5 on:** August 03, 2014, 10:06:51 AM »

Idk what jets are in now but I'm guessing close to the extra set I have but I have a 162 main jet and a 45 pilot jet and I haven't checked the float level yet but idk how to set those without messing it up if its not leveled

rk88r · « **Reply #6 on:** August 03, 2014, 10:28:35 AM »

Confirm that the crankcase hasn't filled up with fuel. Does it act flooded? Keep fresh spark plugs in it until you figure out the issue.

dustin250r312 · « **Reply #7 on:** August 03, 2014, 11:35:13 AM »

Yea it seems like it's getting to much fuel and spits out the front of the exhaust flange can never keep it running for more than 3 mins tops and as soon as you let off the gas it stalls out

pinned250r · « **Reply #8 on:** August 03, 2014, 06:48:04 PM »

I think it is a float level problem. I too had float level issues with a bdt carb that i purchased used from a parts lot. Are all of your electrical components OEM?

dustin250r312 · « **Reply #9 on:** August 03, 2014, 08:40:49 PM »

Yea everything is oem it never use to get spark at first but put a new wire harness on and got plenty of spark but seems to be getting to much fuel

kb250r · « **Reply #10 on:** August 03, 2014, 09:16:42 PM »

Just for elimination purposes,have you checked your reeds to make sure 1 is not hung or broken off...And its not hard to get the float height close if you don't have a way to measure with I've been checking my carbs like this for years and never had a problem...just pull the bowl and put a piece of fuel line on fuel inlet,long enough so you can blow in it fuel line and look at the carb from side push the float up until it cuts off the air your blowing in,and when needle valve cuts off air flow ,the float/float body should run parallel with the carb body(the flat part where the bowl screws on)..hope theirs helps some..

broken1 · « **Reply #11 on:** August 04, 2014, 09:49:44 AM »

Quote from: dustin250r312;40306

Yea it seems like it's getting to much fuel and spits out the front of the exhaust flange

?? Does this mean your running your engine with no pipe on it?

? or is the fuel getting past the pipe to flange seal?

Tbone07 · « **Reply #12 on:** August 04, 2014, 02:33:58 PM »

You need to tear apart your carb, verify exactly what jets are in there (including what needle, and clip position) and get back to us.

Also check the reeds, do a compression test.

What spark plug are you using?

Hurley250R · « **Reply #13 on:** August 04, 2014, 02:55:04 PM »

I would guess stuck floats as well. To be getting that much fuel it spits out the exhaust.

Pumashine · « **Reply #14 on:** August 04, 2014, 04:17:35 PM »

Quote from: Hurley250R;40363

I would guess stuck floats as well. To be getting that much fuel it spits out the exhaust.

A 145 pilot is not gonna be that rich for sure unless its plugged :lol: If your running a BDT carb, it has to be the best!