 Hard to start initially - need to play with the gas pedal |
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| sfrenck |
 Aug 8 2014, 08:49 AM
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#1
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Member  Group: Members Posts: 492 Joined: 28-February 10 From: Wilmington, DE Member No.: 11,411 Region Association: MidAtlantic Region 
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74 Djet system on a 2.0L engine. When I start the car "cold", I have to play with the gas pedal for 10-20 seconds to keep it from stalling. Once I've got it going, everything seems to work as it should (idle is high until the AAR closes) and it drives fine. When in the idle circuit, adjusting the bypass screw and/or the ECU mixture knob do have affect on the engine and I have them set to idle "correctly".
If I turn it off and try to restart it, it starts right up. If it has sat for a bit after driving, it is difficult to start (again, have to play with the gas pedal). Ideas? I thought initially it was my 3-port fuel pump (which is relocated to the front under the steering rack) but I prime the system by turning the key to the on position a couple times and it holds the fuel pressure at ~30 psi. One more thing - I had this setup in my old blue car and it didn't have this problem (switched the mechanicals to the new roller). Thanks in advance for any insight. |
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| sfrenck |
Aug 8 2014, 12:13 PM
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#2
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Member Group: Members Posts: 492 Joined: 28-February 10 From: Wilmington, DE Member No.: 11,411 Region Association: MidAtlantic Region
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Also, the cold-start valve is not connected to the fuel line (that's where my fuel pressure gauge is located).
Timing too advanced maybe? I know it's set to 27 degrees BTDC. The engine does fire right up, it just takes me opening the throttle body to keep it from stalling (which now sounds like too much fuel). |
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| ChrisFoley |
Aug 8 2014, 01:48 PM
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#3
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I am Tangerine Racing Group: Members Posts: 7,990 Joined: 29-January 03 From: Bolton, CT Member No.: 209 Region Association: None
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The MPS is probably adjusted a little too lean.
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| sfrenck |
Aug 8 2014, 02:54 PM
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#4
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Member Group: Members Posts: 492 Joined: 28-February 10 From: Wilmington, DE Member No.: 11,411 Region Association: MidAtlantic Region
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Hmmm... think my CHT is fubar. Just measured the resistance and it thinks it's about -20 degrees outside (~10kOhm) which would explain why it's shooting a lot of gas in at start-up.
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