D-Jet Conversion not going as planned., Car starts but will not run. |
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D-Jet Conversion not going as planned., Car starts but will not run. |
slapshot |
Oct 18 2024, 03:08 PM
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#1
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Member Group: Members Posts: 109 Joined: 11-June 23 From: Utah Member No.: 27,409 Region Association: Rocky Mountains |
I am converting back to D-Jet and my car will start but dies right after. It will not rev up applying throttle. I have a 1975 914 2.0. It was running great with Weber 40s prior.
The D-Jet system is from a 1974 2.0. All the parts came in visibly good condition. TPS calibrates good, AAV tested good, Thermo sensor good, air intake temp sensor good, and a new cylinder head temp sensor. The only test that I think is failing is the vacuum test on the MPS. It leaks. Video of testing the MPS.. The MPS has also been rebuilt at some point. The original part # has been removed. There's a good chance it is not calibrated for my car. I have all new vacuum hose and fuel pressure is between 28 and 30. I don't have any tools to calibrate the MPS. Should I try turning the inner screw on the MPS to see if it helps? Or should I send it to someone to have it rebuild again and recalibrated? If the later do you have any recommendations on who to send it to? |
emerygt350 |
Oct 24 2024, 05:31 AM
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#2
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Advanced Member Group: Members Posts: 2,485 Joined: 20-July 21 From: Upstate, NY Member No.: 25,740 Region Association: North East States |
You can do that without moving the screws. It really is super simple. Tangerine racing has a little instruction sheet Chris ships with his kit. Perhaps ask him for a copy? It really is so simple you don't need it but you will eventually want the tool, so maybe buy the tool and get the instructions?
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slapshot |
Oct 24 2024, 07:20 AM
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#3
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Member Group: Members Posts: 109 Joined: 11-June 23 From: Utah Member No.: 27,409 Region Association: Rocky Mountains |
You can do that without moving the screws. It really is super simple. Tangerine racing has a little instruction sheet Chris ships with his kit. Perhaps ask him for a copy? It really is so simple you don't need it but you will eventually want the tool, so maybe buy the tool and get the instructions? I requested the instructions. Is it as simple as just pushing on the inner screw to pop the diaphragm out? |
rjames |
Oct 24 2024, 10:09 AM
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#4
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I'm made of metal Group: Members Posts: 4,145 Joined: 24-July 05 From: Shoreline, WA Member No.: 4,467 Region Association: Pacific Northwest |
You can do that without moving the screws. It really is super simple. Tangerine racing has a little instruction sheet Chris ships with his kit. Perhaps ask him for a copy? It really is so simple you don't need it but you will eventually want the tool, so maybe buy the tool and get the instructions? I requested the instructions. Is it as simple as just pushing on the inner screw to pop the diaphragm out? After you open the MPS there are 4 screws that hold the diaphragm in place. Once you remove those screws, the diaphragm will be loose and will drop out into your hand. Replacing the gasket (or cleaning it up and trying to reseal it) doesn't require touching the adjustment screws at all. In depth info that covers 95% of everything you could ever hope to know about the MPS can be found here. |
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