Go Back   Rotary Car Club > Tech Discussion > Old School Rotary (Pre-1979)

Old School Rotary (Pre-1979) Pre-1979 Discussion including performance modifications and technical support sections

Thread Tools Display Modes
Old 04-29-2017, 07:07 PM   #1
The Newbie
Join Date: Apr 2017
iTrader: (0)
Posts: 1
Rep Power: 0
MaZdog is on a distinguished road
Default Stumble under load at 3000+ rpm

Hey guys, looking for some help... I have a 86 Mazda b2000 with a 1977 13b block and 1979 rx7 transmission... had the carb adjusted so both front and rear glass is right at the dot. Was running good when I had out earlier this spring until it snowed again...custom headers so doesn't run well at all in cold. I've replaced plugs, adjusted carb floats, new 5-9psi fuel pump, new fuel filter... still stumbles hard on acceleration but idle fine. Any suggestions?
MaZdog is offline   Reply With Quote
Old 05-01-2017, 09:11 AM   #2
Waffles - hmmm good
t_g_farrell's Avatar
Join Date: Aug 2008
Location: Huntersville, NC
iTrader: (0)
Posts: 757
Rep Power: 0
t_g_farrell is on a distinguished road

What carb? I assume nikki since you mention site glass. Why did you have to adjust the
floats if the level was in the middle of the glass already? Do you have regulator on that
fuel pump? Cause nikkis don't want more than 3 psi normally.
1980 GS stockport, Fat Nikki, RB Dual Facetfuel pumps, Holley regulator, RB Street port exhaust, 2GDFIS, MR2 MK I electric fans, 2G strut bar, relayed fans, lights and fuel pump, LEDs

Project Fat Nikki Budget 12A rebuild Video setup < $30.00
t_g_farrell is offline   Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump

All times are GMT -5. The time now is 04:01 PM.

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Hosted by www.GotPlacement.com
Ad Management by RedTyger