I have a 2003 T800 with a C-12 that we just put into service, it is very low on power. I fully realize that a C-12 isn't over powered, we have other C-12 powered units doing the same job every day. I can't get over 45mph at 80K gross.
We added a boost gauge and I believe the problem is boost related. The most boost we can get out of it is 13psi. The engine sounds fine, no misses or other odd noises etc.
So far we have done the following: Leak down test on air to air, visually inspected all boots and clamps, visually inspected turbo from air side, changed fuel and air filters. Checked ECM for any fault codes. Visual on exhaust has no smoke at all at WOT.
Next on the list is to test fuel pressure.
If anyone has any other ideas to check or try, please let me know.
Someone on another forum mentioned air blowing thru the compressor or something, please help me understand this better or how to test. (the compressor does build really slow related problem??)
We also have a sister truck to this that needs an inframe that we can rob parts off of for testing purposes if anyone has any suggestions.
Thanks for your help.
We added a boost gauge and I believe the problem is boost related. The most boost we can get out of it is 13psi. The engine sounds fine, no misses or other odd noises etc.
So far we have done the following: Leak down test on air to air, visually inspected all boots and clamps, visually inspected turbo from air side, changed fuel and air filters. Checked ECM for any fault codes. Visual on exhaust has no smoke at all at WOT.
Next on the list is to test fuel pressure.
If anyone has any other ideas to check or try, please let me know.
Someone on another forum mentioned air blowing thru the compressor or something, please help me understand this better or how to test. (the compressor does build really slow related problem??)
We also have a sister truck to this that needs an inframe that we can rob parts off of for testing purposes if anyone has any suggestions.
Thanks for your help.