Carb boots cracking

[revinger]

I am in the process of digging down to check valve clearances on 02 venture.

 

Want to wait and see if they need adjusted before borrowimg the tool.

 

However, noticed the rubber intake between Carb and head have what seem to me to be substantial cracking in the material.

 

Should I go ahead and replace them or is this semi normal aging

 

Sent from my ADR6400L using Tapatalk

[gunboat]

this is normal, this rubber covers alumin tubes. there is / was a article in the tech section about this.

reguards

don c.

[Snaggletooth]

If you have had any issues with the rev's hanging up high or serious idle issues it is worth checking out. Spray something like WD 40 around where they seat and see if there is any fluctuation on the rev's.

 

If not, probalny not a problem.

 

The ones on my '84 looked like they were going to be a problem but after inspection of the inside I left them on. Still the sames ones today.

 

As stated, they are thick rubber over a metal core and rarely do they crack all the way through.

 

 

Mike

[mbrood]

The metal insert only exists in the lower half of the boot, the upper section is all rubber.

If the cracks are in the lower section, smear some black RTV on them and smooth it with a watered finger to stop further weathering, but it's mostly cosmetic. Cracks above half way need a more reasonable address.

[saddlebum]

The metal insert only exists in the lower half of the boot, the upper section is all rubber.

If the cracks are in the lower section, smear some black RTV on them and smooth it with a watered finger to stop further weathering, but it's mostly cosmetic. Cracks above half way need a more reasonable address.

You can also coat the cracks with liquid electrical tape

[MiCarl]

I agree with Snaggletooth - the cracks are very unlikely to be deep enough to cause a problem.

 

He's also told you how to test them. I prefer a bit o starting ether to WD-40, but you need to remember both are flammable and should be used judiciously. You can also use plain old water but it'll only change the idle if you get it in the leak.

[99silver]

I had yamaha replace mine before the warranty expired, but I think they have improved

the rubber compound since.

[ragtop69gs]

I just got done replacing mine, they looked terrible but upon close inspection after removal none of the deepest and widest cracks were all the way through. I am glad I replaced them though, if only for piece of mind.