My early 944 issues
#1
Rennlist Member
Thread Starter
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
So had my 84 944 for about a year now. Same issue is happening just at different rpm’s.
Replaced plugs and wires, and coil.
New fuel pump, filter, and strainer.
new dme, and afm from 87 ( since changing it the shifts are way smoother but now the break up happens a bit earlier in the rpm range and feels like it lost power
is there any chance this could be some issue with timing my idle is super low and almost feels
like stalling
Replaced plugs and wires, and coil.
New fuel pump, filter, and strainer.
new dme, and afm from 87 ( since changing it the shifts are way smoother but now the break up happens a bit earlier in the rpm range and feels like it lost power
is there any chance this could be some issue with timing my idle is super low and almost feels
like stalling
#4
Addict
Rennlist Member
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
What do the plugs look like? Low idle can be over-fueling, commonly caused by leaking FPR, Damper or injectors. Those issues are getting more common due to age and fuel additives.
#5
Rennlist Member
Thread Starter
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
#7
Three Wheelin'
Join Date: Oct 2021
Location: Southern WI - 89S2 Megasquirt PNP
Posts: 1,279
Received 286 Likes
on
249 Posts
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
A simple fuel pressure test will tell you whether the FPR/damper is bad. Maybe try that first.
Also this:
https://www.clarks-garage.com/shop-manual/ts-01.htm
Also this:
https://www.clarks-garage.com/shop-manual/ts-01.htm
Trending Topics
#8
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Try pulling the vacuum line that goes to the FPR. If it’s bad, there’s a good chance that fuel will come from the vacuum line, indicating a hole in the vacuum chamber diaphragm. This can be done on both the FPR and the damper. No fuel= good. HTH some😀
#9
Rennlist Member
Thread Starter
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
yes so I did do this test a few weeks ago before changing the afm & dme to late model units. When doing the test there was a slight change in idle but no fuel in line.
The following users liked this post:
Tiger03447 (07-26-2024)