Power loss - Competition Diesel.Com

4bt minirod · 06-03-2019, 08:59 AM

Last year on our 4 and 5 run our 4bt was running really good considering. The temperature was around 40 degrees. This year we didn't change anything and now it doesn't want to rpm and people are telling us that there doesn't seem to be as much smoke as there was last year. Anyone have any thoughts on what is going on?

TheHammer · 06-04-2019, 01:07 PM

Were you monitoring any data?

4bt minirod · 06-04-2019, 01:27 PM

Last year we tried with an old digital camera and it shut off before we left the starting line.

nick2001 · 06-05-2019, 11:13 PM

I would start by checking the timing.

4bt minirod · 06-15-2019, 10:33 AM

Timing didn't change

TheHammer · 06-15-2019, 04:45 PM

If you knew what supply fuel pressure was vs what it is now, if the regulator is returning to much fuel, if you have speed check valves those are known for issues, if there is an injection pump issue, what are the cylinder temps? Or are you not monitoring exhaust temps individually? Are you running a water injection setup?

06-03-2019, 08:59 AM	#1
4bt minirod Name: 4bt minirod Title: Rookie Status: Not Here Join Date: Jan 2017 Member`s Gallery Posts: 26	Power loss Last year on our 4 and 5 run our 4bt was running really good considering. The temperature was around 40 degrees. This year we didn't change anything and now it doesn't want to rpm and people are telling us that there doesn't seem to be as much smoke as there was last year. Anyone have any thoughts on what is going on?

06-04-2019, 01:07 PM	#2
TheHammer Name: TheHammer Title: broke Status: Not Here Join Date: May 2012 Location: juneau wi Member`s Gallery Posts: 738	Were you monitoring any data?

06-04-2019, 01:27 PM	#3
4bt minirod Name: 4bt minirod Title: Rookie Status: Not Here Join Date: Jan 2017 Member`s Gallery Posts: 26	Last year we tried with an old digital camera and it shut off before we left the starting line.

06-05-2019, 11:13 PM	#4
nick2001 Name: nick2001 Title: Too Much Time Status: Not Here Join Date: Aug 2009 Location: Northeast Wisconsin Member`s Gallery Posts: 314	I would start by checking the timing.

06-15-2019, 10:33 AM	#5
4bt minirod Name: 4bt minirod Title: Rookie Status: Not Here Join Date: Jan 2017 Member`s Gallery Posts: 26	Timing didn't change

06-15-2019, 04:45 PM	#6
TheHammer Name: TheHammer Title: broke Status: Not Here Join Date: May 2012 Location: juneau wi Member`s Gallery Posts: 738	If you knew what supply fuel pressure was vs what it is now, if the regulator is returning to much fuel, if you have speed check valves those are known for issues, if there is an injection pump issue, what are the cylinder temps? Or are you not monitoring exhaust temps individually? Are you running a water injection setup?