how to turn up fuel...in pictures?

Steel Soldiers is supported by:

Scottd9990

New member
157
0
0
Location
Concord, NC United States
I by-passed my FDC last night and Wow, what a difference. Pyro and boost gauges inbound for install. I now get a quick puff of black smoke with each gear shift. Smoke clears right right away as the rev's come up. I now have some power at least!!! I will temper my fun until gauges are installed.
 

yagenrok636

New member
20
0
0
Location
Tallahassee, FL
just be advised if you turn the fuel up too far the FDC will do strange things to the engine like, stuttering shuttering missing popping through the exhaust bad fuel mileage loss of power extreme amount of black smoke and high EGT's at least this happen to me not saying it would happen to you. I also do know this from experience if the FDC is still attached and working when you turn it up and if you start using waste oil for some reason it counteracts with that system and it doesn't run properly when. Now, when I bypassed it runs good and doesn't stutter doesn't miss runs excellent but I still have an issue of running straight diesel fuel, not sure why that is but that is one of the issues I'm still having. I can only run waste oil without the FDC and can only run diesel fuel with the FDC as long as its not turned up....
I'm experiencing all of these things. Exhaust pops weird. Lots of black smoke at idle. Truck takes a long time to start on a 70 degree day. I only by-passed the FDC and didn't adjust the fuel at all. I went down 10 flats on the fuel, and it still has a really hard time starting, pops out the exhaust, runs really hot (1200 degree EGT) and acts like it has no power with 10 psi.
 

RAYZER

Well-known member
3,381
39
48
Location
sanford/florida
I'm experiencing all of these things. Exhaust pops weird. Lots of black smoke at idle. Truck takes a long time to start on a 70 degree day. I only by-passed the FDC and didn't adjust the fuel at all. I went down 10 flats on the fuel, and it still has a really hard time starting, pops out the exhaust, runs really hot (1200 degree EGT) and acts like it has no power with 10 psi.
Have you had your injectors pop tested? They may be worn out and leaking.
 

RAYZER

Well-known member
3,381
39
48
Location
sanford/florida
I'm experiencing all of these things. Exhaust pops weird. Lots of black smoke at idle. Truck takes a long time to start on a 70 degree day. I only by-passed the FDC and didn't adjust the fuel at all. I went down 10 flats on the fuel, and it still has a really hard time starting, pops out the exhaust, runs really hot (1200 degree EGT) and acts like it has no power with 10 psi.
Were you able to resolve this issue?
 

Shane 1971 M35A2

New member
8
0
1
Location
Travelers Rest. S.C.
I did the 50 cent trick or "quarter crap" on my 1971 M35A2 with C turbo, and saw a noticible improvement in power. When I upgraded to 11-20 tires I stacked another quarter for a total of 3 in the fdc. I am pleased with the improvements in power, streetability, turbo spool sound, hill climbing improvement, overall driveability, and it has been about 2 years. Maybe turning up the fuel in other ways and bypassing the fdc would give even better results. What I can say is it worked for me and thats "my 75 cents".
Shane
 

Floridianson

Well-known member
Steel Soldiers Supporter
Supporting Vendor
6,177
139
63
Location
Interlachen Fl.
I do not understand why someone would do the quarter thing on there own truck. Best thing is to bypass the FDC and add a pyrometer. From then on we do all the fuel adjusting from the main fuel control or twin nuts under the triangle cover. When we bypass the FDC the droop screw is not changing positions because it rides on the FDC wedge stop plate that use too move. So all we can do is adjust the main fuel / twin nuts and have to deal with the extra fuel on the lower end of the RPM scale.
 
Last edited:
Top
AdBlock Detected

We get it, advertisements are annoying!

Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website like our supporting vendors. Their ads help keep Steel Soldiers going. Please consider disabling your ad blockers for the site. Thanks!

I've Disabled AdBlock
No Thanks