Yes, mikuni 42s commony rattle at idle on evos- not a deal-breaker- it's nothing.
My 1340 evo with 42 HRS Mikuni idles fast after it gets hot no matter how i adjust the idle air screw. What am i doing wrong??
P1504= Idle air control circuit malfunction
Start at 1 1/2 turns from seat and adjust for best idle
Normal is 20-30 psi at idle. 40-60 at 3000 rpm. Minimum at idle is 10psiNormal is 20-30 psi at idle. 40-60 at 3000 rpm. Minimum at idle is 10psi
There is a small screw adjustment on the drivers side, closer to the bottom back part of the mikuni carb. Remove the air filter and housing to get at it better
Normal is 30 at idle. 50+ at 3000 rpm. Minimum is 12 at idle.
10psi is minimum. Normal would be 30 at idle, 60 at 3000 rpm.10psi is minimum. Normal would be 30 at idle, 60 at 3000 rpm.
Something loose? Exhaust pipe rattling/hitting on something? You'll have search it out.
Minimum of 10 psi at idle, 20-30 at idle is average.Minimum of 10 psi at idle, 20-30 at idle is average.
The idle is preset at factory. No adjustment provisions are provided. In cooler temperatures, it will take a little longer for the idle to come down. If the vehicle continues to have a higher than normal idle, then you will need to take it to a shop where they can diagnose the problem. Driving around with a higher than normal idle can damage the transmission.
Idle speed is normal.
17 TO 19 INCHES AT A IDLE. 18 to 21 inches at idle, and the above answer is close enoungh too.