It is currently Mon May 21, 2018 5:25 pm

All times are UTC-05:00




Post new topic  Reply to topic  [ 2 posts ] 
Author Message
 Post subject: 1989 Riva Razz issues
PostPosted: Mon Nov 06, 2017 9:22 pm 
Offline
n00b
n00b

Joined: Mon Nov 06, 2017 9:15 pm
Posts: 1
To prevent spam, enter the year 'modern' scooters were first sold in North America (hint: 1982): 1982
Hey Team, I have a 1989 riva razz that i am about to set fire too as i can not get it to run properly.
So i got the scoot a few weeks ago, it would run if you partially blocked the intake to really restrict it but would not idle etc etc. i cleaned the carb to within an inch of its life and got nothing. I did a compression test and it came back at about 60, i thought this was low so i pulled it apart, gave the cyl a light hone and it came up pretty good, slapped a new piston and rings in it with new gaskets and put it back together, no better unfortunately. i figured it might be cranks seals etc and i had another bottom end there, so i whacked the new top end onto this other bottom end (still unknown bottom end) and its doing the same thing. compression test now comes back at 75-80 (manual says 71psi is stock) and it only runs if choked severly and then with doing that its super rich and fouls the plug. i pulled the reeds out and they are mint and nicely closed etc etc. exhaust has been de-coked and is not blocked, im really suck here and dont know what else to do.

apparently the 75psi comp should be fine, am i unlucky to get two bad bottom ends in a row? help me get this thing sorted pleeeeeeease!
cheers
Blake


Top
PostPosted: Tue Nov 07, 2017 10:38 am 
Offline
Rim Kicker
Rim Kicker
User avatar

Joined: Sat Sep 24, 2016 3:42 pm
Posts: 18
To prevent spam, enter the year 'modern' scooters were first sold in North America (hint: 1982): 1982
Location: Worcester, MA
Is the stock air filter and boot on it?

I had a Jog (same engine) that ran horribly when the boot broke and another one that was missing the whole thing and behaved similarly to yours. So it seems these engines just don't run right at all without the proper airflow before the carb. On my second jog (without the air box) I was able to get it to run quite well with an aftermarket cone air filter that was severely taped up to restrict airflow, though it does seem like you might have other problems.

Good luck!

_________________
_______________________
~Chris from Massachusetts

'84 Yamaha Riva 180
'87 Honda Helix
'84 Honda Aero 125
'85 Honda Aero 80


Top
Display posts from previous:  Sort by  
Post new topic  Reply to topic  [ 2 posts ] 

All times are UTC-05:00


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Limited