 Cold start injector Q |
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| rjames |
 May 3 2021, 10:00 AM
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#1
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I'm made of metal  Group: Members Posts: 3,974 Joined: 24-July 05 From: Shoreline, WA Member No.: 4,467 Region Association: Pacific Northwest 
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Should the cold start injector have voltage going to after the engine is warmed up? I thought that it was only supposed to fire when temps were below ~32 degrees. I haven't pulled the injector out to see if it's actually spraying fuel, but I'm pretty sure it is given the change in how the engine runs at idle when I unplug it, even after the engine is warm.
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| rjames |
May 3 2021, 04:29 PM
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#2
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I'm made of metal Group: Members Posts: 3,974 Joined: 24-July 05 From: Shoreline, WA Member No.: 4,467 Region Association: Pacific Northwest
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@GregAmy
Thank you, this is super helpful. I'm trying to trace down a very intermittent issue where the car will all of a sudden run super rich, the idle will fluctuate and wants to stall. When going over all of the FI components again I ran into this weird CSV issue. Unfortunately simply disconnecting the cold start injector didn't fix the issue like I had hoped although it did effect the idle, which is what led me to thinking it was firing when it shouldn't be. |
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| JeffBowlsby |
May 3 2021, 04:38 PM
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#3
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914 Wiring Harnesses Group: Members Posts: 8,549 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None
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Not only does the Djet CSV have full time power to it, it also has full time pressurized fuel to it.
It can cause a rich mixture just by leaking which they are know to do. You cans send the valve out for cleaning and pressure testing to verify or just completely remove it from the engine fuel and FI harness. |
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| rjames |
May 3 2021, 05:39 PM
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#4
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I'm made of metal Group: Members Posts: 3,974 Joined: 24-July 05 From: Shoreline, WA Member No.: 4,467 Region Association: Pacific Northwest
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QUOTE(JeffBowlsby @ May 3 2021, 03:38 PM)  Not only does the Djet CSV have full time power to it, it also has full time pressurized fuel to it. It can cause a rich mixture just by leaking which they are know to do. You cans send the valve out for cleaning and pressure testing to verify or just completely remove it from the engine fuel and FI harness. Wait, I thought we just established that it is only supposed to get power when cranking? Good call out about it possibly leaking. I didn't even consider that. I am fairly certain that it's firing all the time when plugged in because even when the engine is warm unplugging it alters the way the engine runs (runs more lean when disconnected). Since I don't need it, maybe I'll try |
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Posts in this topic
rjames Cold start injector Q May 3 2021, 10:00 AM
GregAmy It has 12V all the time. The thermoswitch at the s... May 3 2021, 10:16 AM rjames Are you sure?
My understanding form a post from M... May 3 2021, 03:19 PM
GregAmy
Are you sure?
Yes, I'm sure I was wrong earli... May 3 2021, 03:33 PM GregAmy Trace the power side of the connector to see if it... May 3 2021, 03:39 PM JeffBowlsby
Not only does the Djet CSV have full time power t... May 3 2021, 05:41 PM rjames Crap. It's been a long day- I realize all this... May 3 2021, 05:48 PM GregAmy ;)
...can someone school me on how the air temp ... May 3 2021, 06:09 PM rjames
;)
...can someone school me on how the air temp... May 3 2021, 10:19 PM |
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