258 dist. is changes timing with comp bypassed?
I recentl had enormous problems with my 88/4.2/carter.
it would run fine for 5 min then slowly die out.
EVERYTHING was covered in carbon, so I:
-rebuilt the Carter BBD
-replaced ALL vacuum lines
-replaced fuel filter
-tightened every bolt that had the possibility of vacuum leak
-Bypassed the computer and stepper motor(to eliminate it as a cause)
- New sparkplugs
After all of this I Made a fairly accurate placement of 8* Timing before I started it.
It ran just,but is was way smoother,at 300 RPM, I checked the timing with my light and it was at 7* so I moved it.
Then I tried to rev it, there was not very much throttle response, on the fourth or so rev attempt it jumped to 1500 RPM and stayed there. I checked the timing again and it was wayyy past 8*, it was on the other side of the pully I am guessing 30's of degrees btdc. I checked to make sure The distributor base did not move, it did not.
I moved the ditributer to 8* and lowered the idle 2 turns and it sputtered and stalled( the mix screws could be abit off).
I started it again and it would not go. So I advanced the distributor to where it was, it then started but again it was very low, I also tried to revit and it wouldn't rev. untill the fourth or so try and the RPM increaced again, along with the Timing.
How can the distributor just change the timing like that with no computer or vacuum hooked up?
Is the distributor scewed?
I Am going to do the "Ford Parts uprade" very soon, would that help?
I am really glad to see it run now but I know I will have to fix this.
Thnx in advance for anything(sorry about long post but I thought you would need a little detail )
KEEP ON JEEPIN!