370 problem

[BCFAST]

Hoping to tap the great knowledge of you all... . I recently installed the 370's I bought thru the GP a few months ago. The motor seems to idle alright but when I step on the throttle (hard or light) it drops a cylinder! And sounds "flat" all the way to 1750-1800rpm and then sounds as though it cleans up. Is this a fuel pressure thing, where one injector wont work... is there something I can do, or send them back? Thanks guys!

 

[Don M]

Maybe you have one injector that is dirty or needs service.

Have you checked the fuel pressure yet?



Don~

 

[H_D98]

have you changed the delivery valves yet? May not be getting enough flow through them under load like that.

 

[Cummins Corvette]

Try bleeding them one more time. Your delivery valves are definetely big enough, the 913 pumps don't have any problems with the 370s.

 

[Deezul1]

CAnderson is right, the 97s dont need bigger delivery valves, and it sure sounds like air in it but could be a dirty injector. The 370s make great power with the right plate, (see sig) try and hang on to them. Try bleeding them one at a time and see if one sounds different than any others and if so maybe exchange that one with the seller.

 

[Turbo Thom]

Boost?

 

[BCFAST]

370's..Redux

OK, I finally had a chance to re-bleed the lines this evening when I got home. I only test-drove the truck a short ways, but I *think* the problem is solved... I'll know tomorrow morning during my 30min drive to work... thanks for all your help and guidance, guys... you all are the best!