Super Chief Problems

[Mike]

It's got to feel good to finally get the problem resolved.

[L.D.Bruce]

Victory at last I found the left coil wire was bad at a splice !!!!!!!

[L.D.Bruce]

I bought a new compression gauge yesterday and checked the super chief I have 140 on one cylinder and 138 on the other By the way these readings where on a cold engine I did not warm it up

[L.D.Bruce]

Update I got the SC running faster than ever before. But still have a few drops leaking past the bowl overflow. and lots of white smoke the power increase is incredible. Does anyone know the base settings for the Mikuni VM34? I like the power where I have it just not the smoke and LOTS of it

[mustangwagz]

ok, so its SAME carb as my dad's then...ok...try this, once assembled, and fuel is on and running all over ground, try TAPPING on the carb with a screw driver handle.. Brisk little taps... just for hell of it bruce. My dad's carb STICKS once in a while, even though its CLEAN as a whistle.

Tap on the bowl area. This wont hurt the carb, just dont HAMMER on it. lol

[L.D.Bruce]

Floats are in right if not it won't let you close the bowl Mikuni has 2 floats My carb is the Mikuni Vm34 I hought it early last year and with working out of town it has very little use.

[mustangwagz]

5 times...and tis flooding still? holy balls. uhh...hmmm, well id start with checking float..Try pulling the float out, and set it in a cup of gas..does it float or sink?

Then i'd leave float out, and hold needle in carb and turn fuel on...when you push needle up into carb, does the fuel STOP or not? if not..i'd say that eitehr needle seal is bad, or the seal up inside the carb that the needle seats on is bad? Only other thing i can say is maybe the float is in upside down? i need to look your carb up and see what the internals look like so i can help ya trouble shoot also.

[L.D.Bruce]

Ok I replaced both plugs that gave me back the power. the vm34mm Mikuni that is really a new carb with less than 4 hours on it is still flooding out the overflows .I have had it apart 5 times now even adjusted the float and still flooding? I did get lucky and bout a CDI flywheel and strator plate off a g44b for $50

[L.D.Bruce]

That is the one I found this morning but was not sure if it was right THANKS!! I bought it. Machine is still flooding and running like crap. I sprayed the carb out again and messed with the choke no luck

[jerbear]

Here is the stator AND FLYWHEEL!!!!, on Ebay. It's been on here awhile. Sometimes on Ebay I look for alternate (wrong!!) spellings of items. Notice Chaparral is spelled Chapparall, so you will never find it in a search. Little ebay tip!!! $50 is a fair price too. All you'll need is a CDI box. GRAB IT!!

CHAPPARALL STATOR PLATE AND FLYWHEEL FUJI ENGINE | eBay

[L.D.Bruce]

I checked compression the best I could with a gauge that is older than I and does not hold the reading. I still had some pressue getting by the gauge but the reading I was getting was 120 with pressure leaking by so they should be in the 130 140 or more range on both cylinders Spark is great on both plugs so I have pulled the carb again how do I know if the choke is open all the way on a mikuni?

[L.D.Bruce]

Thanks I have a lead on a strator plate and flywheel plate is void of points so it looks right I just don't know how to tell if the flywheel is correct both are from a g44b

[George]

I used a G44B bottom end to fix my engine. The heads, jugs and pistons are smaller but the external shrouds are the same and so are the intake and exhaust manifolds.

Here's an external coil.

1 Rupp Nitro Magnum Sport Xenoah ignition coil 089-01 | eBay

The stator is not on ebay at the moment but I've seen a guy selling a few of them, NOS. I bought one a few weeks ago. I'll pm you if i see another come up. I'll do the same for the flywheel and CDI unit. I think HMike has been using a CDI box from another maker with success.

[hydromike]

Was the machine running right the last time you drove it? If it was, and nothing's changed, I'd suspect something in the fuel delivery arena. Is the manual choke relasing completely? Are you running a good fuel filter? When it's "flooding", do you have fuel exiting through the overflow tubes on the Mikuni? I've had floats stick on brand new carburetors (silly, I know...) so I'd double check to see that the needle is shutting fuel off properly.

With a decent spark, your compression could be as low as 100-110 and it'll run. It won't have as much power as a fresher engine, but as long as the cylinders are within 10% or so of each other, things should be ok. Not to dismiss what George says (150 WOULD be good... ), but don't be dismayed if it's lower....

... will a g440b parts work on my g50b

yup!

[L.D.Bruce]

George do you have a picture of the correct CDI parts? and will a g440b parts work on my g50b