Fuching DJet issues *SOLVED*, Running out of things to try |
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Fuching DJet issues *SOLVED*, Running out of things to try |
rjames |
Jun 12 2019, 12:19 AM
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#1
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I'm made of metal Group: Members Posts: 3,911 Joined: 24-July 05 From: Shoreline, WA Member No.: 4,467 Region Association: Pacific Northwest |
Last summer all of a sudden my car wouldn’t stay running. If I could get it started the idle would hunt and the car would die unless I kept on the gas. Lack of power at times. All somewhat erratic.
Found that the MPS wouldn’t hold vacuum. Replaced the bad mps with a known good one. Car idles high when cold (higher than I think it should ~1600 rpm) so AAR is good, then when it warms up idle hunts from ~900rpm to the point where it almost dies unless I open the throttle body bleed screw quite a bit and turn the ECU knob just a few clicks away from full clockwise. So I did the following hoping to fix the issue: Replaced all vac hoses including intake runner to plenum hoses. New intakecrunner gaskets Verified plenum isn’t leaking New throttle body gasket Installed NOS throttle body Rebuilt the distributor New condenser Rebuilt injectors and flow tested New fuel lines Fuel pump is less than 2 years old Set timing and dwell with advance disconnected New CHT (resistance reads 1.7 w/engine off @70 degrees in the garage) Calibrated the TPS, even unplugged it to take it out of the equation, didn’t change anything. ECU matches the MPS (both correct part #s for a ‘75 2.0) Tried a known good ECU from a ‘74, no change. Feels like the MPS needs to be calibrated...but then again, these are all the same symptoms I had with the old bad mps. Replacement mps is from a Jeff B and was tested, but I haven’t retested it to see if it’s holding vacuum. (Don’t have the necessary tool, but maybe that’s the next step) Help! What am I missing? |
rjames |
Jul 14 2019, 07:42 PM
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#2
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I'm made of metal Group: Members Posts: 3,911 Joined: 24-July 05 From: Shoreline, WA Member No.: 4,467 Region Association: Pacific Northwest |
Beyond frustrated now.
Started again from the beginning- timing. My fan only has a single mark- a red one, notched at 7.5 degrees from TDC. I can’t find any other evidence of another fan like mine. I guess maybe I’ve been tuning it from the wrong mark for the last 10 years (?!) as back then I used pelican’s template to find the 27 advance mark off of the 7.5 mark. Verified where TDC and 27 BTDC actually was. Car now starts and idles high when cold (too high) and then when it warms up it dies and won’t start again. WTF? Before I could get it to idle, albeit high, now it won’t run after it warms up. Setting the timing to where it was doesn’t change anything. I feel like it’s flooding when trying to restart. Engine seems hot- distributor gets too hot to touch after several attempts to restart it. Fuch this thing. Getting ready to push the car off a cliff. |
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