My poor carbs :(

Started by Gloveberg, March 13, 2015, 10:34:10 PM

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LIMagna

Charlie
=======================================
96 VF750C Magna - Pearl Shinning Yellow - Factory Pro Jet Kit
Vance&Hines Classic II Pipes - Progressive 440 Rear Shocks
Race Tech Gold Valve Cartridge Emulators & Fork Springs

16 BMW R1200RT - :) :) :)

hootmon

Thanx Charlie... They are out of carb kits now, but hopefully they will have some in the future
"accidents aren't predictable, don't be a DUMBASS" - MD Dan

Gloveberg

Jimmy Glover
MOOT #9
Central Region Coordinator
1996 Magna

There are two kinds of pedestrians: The Quick and the Dead.

LIMagna

I wish I had known about that site when I did my carbs ... ended paying ~$100 for the factory gasket sets.  I think the previous owner gave me a set of new float needles though when I bought the bike.  Swapped  out those parts and have had no troubles since (~ 5 years). 
Charlie
=======================================
96 VF750C Magna - Pearl Shinning Yellow - Factory Pro Jet Kit
Vance&Hines Classic II Pipes - Progressive 440 Rear Shocks
Race Tech Gold Valve Cartridge Emulators & Fork Springs

16 BMW R1200RT - :) :) :)

hootmon

The nice thing about these kits (IF they ever get them in stock!!!) Is it looks like they are made of material that stands up to ethanol...
"accidents aren't predictable, don't be a DUMBASS" - MD Dan

SkyRide

I might as well confess too.  My name is Rick and I abused my Magna. It sat way too long for even Seafoam to protect it.

I have successfully rebuilt its carbs before but don't want to unless that is the problem.  Here is where I am.  I drained ALL the gas from: tanks, lines, filter, bowls. Put in a new fuel filter and new gas and verified gas will come out the bowl drain for each cylinder.  It starts now if I slightly open the throttle.  It runs above 2k RPM but not below.  After 2-3 minutes of running this way, the exhaust pipes near the heads on 1 and 4 are not even warm, 2 and 3 are hot.  I have decent spark at all plug wires.  Plugs aren't wet, but 1,3,4 are damp and dark; all gaps are correct.

The cold cylinders are not on the same coil/spark box and having a good spark convinces me it is not ignition.

I already have the carb kit and I almost want to tear into it to install stainless replacements for the fuel and air tubes which I already have too.

I know I'll be going into the carbs; honestly, I think I'm just stalling.  June 3 isn't going to wait though.  Electric? Humm sounds better all the time.

Rick Frankenberger
83 V45
83 VF750C
San Antonio

Smoked U

Quote from: SkyRide on April 04, 2015, 08:09:08 PM
I might as well confess too.  My name is Rick and I abused my Magna.


and the Magna Abuse intervention group in the circle responds, "Hi Rick"
You are not paid for what you do, but rather for what you will do and when that time comes, you will be highly underpaid.

Audere est Facere

Lead the Way!

D.L. Shireman

TLRam1

You already know the answer.
Terry

My mama always told me never put off till tomorrow people you can kill today.

Allen, TX.

74 GT750 - 75 GT380 – 01 Magna - 03 KX 250-01 – 04 WR 450 - 74 T500 Titan

SkyRide

Everything is back together and runs like it used to.  I'm ready for June.

I haven't seen this posted before so here is what I think is a better way to bench sync your carbs.  Shine a bright light from the air box side and look at the throttle plate side.  Adjust until the crescent of light between the throttle plate and the carb throat almost disappears.  Repeat for each carb.  I found it a lot easier and more consistent than judging when the plate aligned with the small hole or using a shim to get them all the same.

Rick Frankenberger
83 VF750C
San Antonio