| Re: If it ain't one thing... |
Subject: Re: If it ain't one thing... by bogus on 2010/12/15 20:08:08 you nailed it. This is the email I just sent Dynaspark. They have been very prompt in this matter; so far, so very good. I just finished the diags... Fuel pressure, with the AFPR is set at about 40 PSI, and holding, I have Bosch replacement injectors, so they are rated a bit differently. Vacuum disconnected it is about 44 PSI. When manually rev'd, the PSI jumps up to about 43 then settles back down. I don't think the problem is with fuel delivery. I was concerned because of how the failure manifests. I checked the harness ends to the Dynaspark, and they were clean, to be sure, I hit them with Dielectric grease. The harness into the Dynaspark is sealed. I got the engine up to op temp and was able to replicate the failure. At about 4000 RPM, when accelerating, all hell breaks loose. The bottom falls out and the engine loses all power. It catches up and is running ok, as long as you keep it below 4000 RPM. After a while, the failure starts to creep downward the rev range, to the point where last night, getting past 3000 RPM was a trick. I can't prove the code... last night I forgot to reset them, so I don't know if the code I got today was new or last nights. But since it presented on 2 separate occasions... I am expecting it to be a reoccuring theme. As the engine cools, I will start disassembly. I hope to have the unit in the mail to you tomorrow. Not much more to add, really. |
