Quantcast

'88 V-Max starts only with choke, revs high for 1 second, then dies.

Yamaha Star V-Max VMAX Motorcycle Discussion Forum

Help Support VMAX Forum:

desert_max

Well-Known Member
Supporting Member
Joined
Mar 14, 2010
Messages
539
Reaction score
165
Location
Phoenix, Arizona, USA
And believe I showed remarkable restraint in this thread by not engaging Firemedic in a lengthy diatribe regarding the late, great Frank Zappa. (And I wanted to.) I was and still am a fan. Saw him numerous times in the great city of Boston several decades ago. Brilliant human even if a bit off the rails. Gone too soon… and he wasn’t happy about it. Then again, who ever is?
 

02GF74

Well-Known Member
Joined
Mar 26, 2020
Messages
217
Reaction score
48
Location
UK
Nice one, must feel good to be running properly.

So the second carb clean/overhaul fixed it - what do you think you missed the first time and/or did differently?
 

Paul S Wilcox

Active Member
Joined
Oct 6, 2019
Messages
39
Reaction score
3
Hey, 02GF74...

It's hard to know exactly what I did differently on the last rebuild, as there are so many variables (gross understatement!).

Some possibilities:
-- Entertained ALL Vmax forum suggestions
-- Did a better job of triple-cleaning ALL carb parts with an ultrasonic cleaner
-- Used more compressed air, more often, in more places
-- Replaced some "iffy" jets and emulsion tubes
-- Paid more attention when aligning the four carbs and linkage
-- Backed off on all the linkage adjustments and started from scratch to bench sync the butterfly valves
-- Wet tested the float levels, both on the bench and on the bike
-- Quintuple-checked for air leaks using starting spray
-- Did an ancient Indian rain dace prior to pushing the start button

Other than the above, success was either dumb luck or the TTAC theory in action (Third Time's A Charm).

Thanks for asking.

Paul
 
Top