 Frustrated with D-jet----help please |
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| Porsche Rescue |
 Jul 12 2003, 07:52 PM
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Saving and Enjoying Old Porsches  Group: Members Posts: 2,978 Joined: 31-December 02 From: Bend, Oregon Member No.: 64 Region Association: None  |
'71 D-jet will not idle when hot. Poor throttle response coming off idle (acts like a carbed engine with no accelerator pump). Idle speed screw has almost no effect on RPM. Once engine gets going it pulls strong and smooth to red line.
ECU has no mixture adjustment. Valves, dwell and timing are correct (although dwell floats a bit with rpm, probably worn distributor). I have tested MPS and pressure sensor II and they meet B. Anders specs. Cannot move any air through MPS by blowing. Throttle switch checks ok but I switched to another throttle body and switch anyway, no change. Replaced all vacuum hoses. Does anyone out there have any ideas? Don't say switch to carbs! "Not gonna do it, wouldn't be prudent" (#41). |
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Posts in this topic
Porsche Rescue Frustrated with D-jet----help please Jul 12 2003, 07:52 PM
ChrisReale How is the resistence on the CHT? Less than 100 w... Jul 12 2003, 07:57 PM Bleyseng If the idle speed screw has no effect than there i... Jul 12 2003, 08:14 PM Porsche Rescue Geoff, tell me more .....where do I get a rebuilt ... Jul 12 2003, 08:27 PM Bleyseng Schucks sells them for $50, they are rebuilt ... Jul 12 2003, 08:48 PM Porsche Rescue From looking at the plugs I think it is running a ... Jul 12 2003, 08:52 PM Porsche Rescue One more thing, if the MPS is bad does that mean i... Jul 12 2003, 08:59 PM Bleyseng If the MPS is bad the car will be full rich, like ... Jul 12 2003, 09:54 PM Porsche Rescue So, if mine is cracked what next? Pelican says NLA... Jul 12 2003, 10:07 PM MarkV Performance Products spring 2002 catalog lists new... Jul 12 2003, 10:34 PM Bleyseng Get a $15 vacuum pump from your FLAPS and pum... Jul 13 2003, 09:23 AM Porsche Rescue I gotta do a better job of shopping around. Last t... Jul 13 2003, 10:18 AM Brad Roberts I need to send all my MPS' to Geoff... if he f... Jul 13 2003, 11:11 AM Porsche Rescue 3 days for Schucks to get a distributor, A1 Cardon... Jul 13 2003, 11:51 AM Bleyseng Send them up Brad, so I can recondition some of th... Jul 13 2003, 01:34 PM r_towle Could someone please let me know the phone number ... Jul 17 2003, 05:58 PM jdogg Someone once told me that you could use a 1.7 dist... Jul 17 2003, 07:44 PM Porsche Rescue Rich,
It appears to be a national chain. When I en... Jul 17 2003, 08:17 PM Bruce Allert Jim, why not put my MPS on your car to see if that... Jul 17 2003, 08:38 PM Porsche Rescue Thanks Bruce. I need a distributor regardless. The... Jul 17 2003, 08:43 PM Bleyseng A 1.7 MPS is a 1.7 MPS so try out Bruce's to s... Jul 17 2003, 09:11 PM Porsche Rescue Geoff, just checked Anders' chart and he agree... Jul 17 2003, 09:21 PM Bleyseng Yes, you can run a 1.7 dizzy in a 2.0l. Yeah, its ... Jul 17 2003, 09:30 PM
Bruce Allert Hey Jim, sounds like a plan. We'll get to the ... Jul 17 2003, 10:30 PM  |
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