Finally think I figured out the problem I've been having with my 740T. It started out as a rough idle and noisy fuel pump and eventually seemed to get a bit worse. I noticed power loss, increased fuel consumption, and the acceleration was not smooth. Curiously, it would normally run fine when first started then after driving around for a bit it would start acting up. Sometimes it was very difficult to start, requiring 20+ seconds of cranking. Replaced the torn hose between the pre pump and pickup, didn't help. Replaced the main pump with a good used one and again the same issues. Went in again and replaced the pickup sock since I noticed it was torn, double checked operation of the pre pump but still the problem remained. Figuring there wasn't much left, I swapped the fuel pressure regulator and everything seems to be back to normal. Smooth, strong acceleration all the way up to the redline, smooth idle, nice to have everything back to normal. Now that I once again have dependable transportation I can start playing with the 240.
- posted
17 years ago