Bogs for a second and then takes off - ZR-1 Net Registry Forums

Bearly Flying · 10-16-2014

I have the same problem as the OP, ported plenum and IH's, secondary delete.

The car runs very well except for when it is in low throttle positions. ie normal traffic stop and go conditions.

Any periods of light or no throttle positions seem to generate a rich condition and flood the motor.
A decisive hit on the throttle will clear it's throat and all is good until the next lite throttle event.

It's not all that fun when you are in stop and go traffic.

I believe we are flooding the motor at low throttle positions.

BennieC. · 10-16-2014

It appears that Z owners that is having the problem have in commons are: 1) the secondaries eliminated
2) Haibeck chip

How about the injectors. What injectors do you have currently installed. I have talked to Marc in regards to this concern and he has 2 1990 that are doing the same thing as well. He suspecting injectors. I'm going to data log and check the car out this weekend. Will let you know what I find out. We can make some changes to the fuel trim if need be.

10-16-2014	#1
Bearly Flying Join Date: Dec 2012 Location: Ponoka, Alberta, Canada Posts: 158	Re: Bogs for a second and then takes off I have the same problem as the OP, ported plenum and IH's, secondary delete. The car runs very well except for when it is in low throttle positions. ie normal traffic stop and go conditions. Any periods of light or no throttle positions seem to generate a rich condition and flood the motor. A decisive hit on the throttle will clear it's throat and all is good until the next lite throttle event. It's not all that fun when you are in stop and go traffic. I believe we are flooding the motor at low throttle positions.

10-16-2014	#2
BennieC. Join Date: Feb 2013 Location: Sacramento Posts: 21	Re: Bogs for a second and then takes off It appears that Z owners that is having the problem have in commons are: 1) the secondaries eliminated 2) Haibeck chip How about the injectors. What injectors do you have currently installed. I have talked to Marc in regards to this concern and he has 2 1990 that are doing the same thing as well. He suspecting injectors. I'm going to data log and check the car out this weekend. Will let you know what I find out. We can make some changes to the fuel trim if need be.