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MCD RaceRunner - Need a bit of help

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MCD RaceRunner - Need a bit of help

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Old 07-03-2007, 05:45 PM
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jguerriere
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Default MCD RaceRunner - Need a bit of help

Hello,

I just got my MCD RaceRunner buggy and am all ready to go. I had it upgraded to the 30.5 cc Stroker Motor, but can't get it to start.

I think I know the issue: which way do I need to push the lever to turn the choke on? Up or Down?

I get it to sputter, but I think I am just messing up the choke. My pulse is up to 150, so any help is appreciated.

My son is just itching to go!

Thanks in advance.

-John
Old 07-03-2007, 06:15 PM
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MaXuS
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Default RE: MCD RaceRunner - Need a bit of help

Hi. Down - close (cold start), Up - open. I've got Zen G260, but i think CY is all the same.
Old 07-03-2007, 06:18 PM
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MONAROMAN
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Default RE: MCD RaceRunner - Need a bit of help

Once it sputters flick the choke over the other way, should start
Old 07-03-2007, 06:35 PM
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jguerriere
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Default RE: MCD RaceRunner - Need a bit of help

Thanks...

I almost had it, but I ended up snapping the pull cord...oh well....

I think I have too much oil in the premix. Supposed to be at 25:1 for break-in using a non-synthetic oil, but I think put too much oil in. Prob 6 oz instead of 4. So, I am more like 15:1...

Shame. I used to be a firefighter and had to start a chainsaw on 2 pulls!!! I can't believe the MCD beat me!
Old 07-03-2007, 06:44 PM
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MaXuS
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Default RE: MCD RaceRunner - Need a bit of help

My procedure (car is on the stand, radio off):
1 Priming bulb
2. Lever is down - 1-3 pulls to first fires
3. Open throttle for ~1-2 mm - 1-3 pulls to start
Old 07-03-2007, 06:51 PM
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jguerriere
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Default RE: MCD RaceRunner - Need a bit of help

Thanks for the tips. I will give that a try if I can fix the pull cord.

Do you know if the pull cord is something I can find suitable material for a repair at home depot, or do I need to special order it?

Also, do you think my pre-mix is too rich to run? I guess I am at about 15:1 or so....

Should I drain the tank and start over?

-John

Old 07-03-2007, 06:59 PM
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MaXuS
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Default RE: MCD RaceRunner - Need a bit of help

I'm in Russia - i think you can find some suitable cord - it' much easier in the USA.
I always use 1:25. I think it's better to make some new premix for first attempts to start in order to be sure that it's everything ok with fuel. Then check fuel lines - the intake is on the bottom of the carb - that line should end near bottom of the fuel tank.
Old 07-04-2007, 01:15 PM
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jguerriere
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Default RE: MCD RaceRunner - Need a bit of help

Thanks for the tips. I replaced the started cord and gas making sure my mix was right.

I fired up on the 3rd pull, but will only rev up if I keep pressing the buld. There are air bubbles in the buld (not sure if there should be).

When it starts and I press the bulb, it revs up and I can only get it to keep running when the throttle is near idle. When I increase the throttle, it stalls making a deep sucking sound like it's just not getting gas. If I add throttle and push the prime bulb, it screams!

So, any ideas? Sounds like I am not getting a good supply of fuel...

All suggestion appreciated.

-john
Old 07-04-2007, 03:54 PM
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boro250202
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Default RE: MCD RaceRunner - Need a bit of help

There is a long metal tube and a short tube that goes in your fuel tank , make sure the long one is connected to the in-side of your carb.
Old 07-04-2007, 06:50 PM
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jguerriere
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Default RE: MCD RaceRunner - Need a bit of help

Yep - the fuel lines are ok. Found out what the problem is...

The low speed jet was out about 6 turns. After finally giving up and reading a faded one page note about the engine that came with the buggy, I found what the right jet settings should be. I closed it and then set it to 1.25 turns and it started in the 1st pull.

It's running great. this things a blast....

thanks for the help!

-John
Old 07-04-2007, 10:42 PM
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TheFgMan01
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Default RE: MCD RaceRunner - Need a bit of help

6 turns out [X(] thats insane ! maybe some companies dont preset the needles on the carb for you.. FG does with the standards engines.. Im glad you go it up and running and having fun.
Old 07-05-2007, 08:49 AM
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x2beach
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Default RE: MCD RaceRunner - Need a bit of help

john,

where are you at in SC? I live in Myrtlebeach,SC I have (3) MCD 2 Baja 1000 and Racerunner, if you not the far we can get together and fix you up
Old 10-19-2007, 08:34 PM
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Mr.Blue
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Default RE: MCD RaceRunner - Need a bit of help

I used 6-7% oil mixture on my 2 fillings.

HINT(just to fire you up a little more) Dont pull so long and hard
Old 10-19-2007, 08:35 PM
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Mr.Blue
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Default RE: MCD RaceRunner - Need a bit of help

I used a rope from a (i think its calld) flag pole...................Worked for me

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