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frankk
Posts: 19 Joined: Fri May 25, 2012 12:08 pm
Post
by frankk » Tue Sep 29, 2015 2:29 pm
I have been helping a friend with his R90/6 It starts great and runs good at lower rpm but splatters on full acceleration. Any hints.
FrankK
schrader7032
Posts: 9016 Joined: Fri Oct 27, 2006 3:00 am
Location: San Antonio, TX
Has thanked: 2 times
Been thanked: 29 times
Post
by schrader7032 » Tue Sep 29, 2015 2:43 pm
What sort of things have you done to the bike so far? Did it run OK some time back and now not so much?
Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2
Fast. Neat. Average. Friendly. Good. Good.
mark_weiss
Posts: 173 Joined: Sat Nov 16, 2013 11:49 pm
Post
by mark_weiss » Wed Sep 30, 2015 11:13 am
Could be a torn carburetor diaphragm.
Mark
qualitycycleservice.com
schrader7032
Posts: 9016 Joined: Fri Oct 27, 2006 3:00 am
Location: San Antonio, TX
Has thanked: 2 times
Been thanked: 29 times
Post
by schrader7032 » Wed Sep 30, 2015 12:01 pm
Will it run steady speed at same 60-70 mph? You say specifically under acceleration. Acceleration and steady speed typically are different problems.
Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2
Fast. Neat. Average. Friendly. Good. Good.
jrapose
Posts: 260 Joined: Mon Feb 12, 2007 5:26 pm
Post
by jrapose » Thu Oct 01, 2015 1:16 pm
I went thru the same problem with a R69S.... I tried everything I could think of.... it turned out to be a bad plug... should not have been bad as it had much less than 1000 miles on it...it would break down under hard acceleration....otherwise it was fine.
Joel