Misfire on startup (2l 8v 2e)

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oemplus
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Misfire on startup (2l 8v 2e)

Post by oemplus »

Greetings

I have a mk1 2l 8v (2e). With every coldstart, there is a misfire/stutter. I keep it on a low idle (1500-2000) and it clears up within about 5 minutes when it reached operating temperature. For the rest of the day she will start up fine It is running on Dicktator and was tuned by JVS

I have replaced the following already :
Plugs (Car was serviced)
Fuel Pump
Fuel Injection Tank
Water Temp Sensor
Had the injectors and rail sent away for testing

Any advice would be appreciated.

Thanks
VW Chico 1.3 (2E 2l 8v, Twin Weber 40s, 50mm Exhaust )
Seat Cupra TDI (EGR delete, Racepipe, Straightpipe, RK Button Clutch, Hybrid Turbo, Coilovers, Stage 2+)
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PapaJo
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Re: Misfire on startup (2l 8v 2e)

Post by PapaJo »

Sounds like you have issues with fuelrail pressure bleeding off and on first start the fuelrail takes a while beforeit is full again and all air out of fuel rail.

Check fuel pressure regulator on fuelrail andcheck at pump end that the non return check valve is present on pump outlet.
ReyQii1902
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Audi a3 1.8t 60-2 not sparking and no injection

Post by ReyQii1902 »

Hii guys i fitted harness all was working fine but now im getting spark then all of a sudden it falls away and im not receiving any fuel on my injectors and the dictator only shows red constant light
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PapaJo
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Re: Audi a3 1.8t 60-2 not sparking and no injection

Post by PapaJo »

ReyQii1902 wrote: Sun Jan 30, 2022 11:48 am Hii guys i fitted harness all was working fine but now im getting spark then all of a sudden it falls away and im not receiving any fuel on my injectors and the dictator only shows red constant light
Check the crank sensor and its wiring.
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Re: Misfire on startup (2l 8v 2e)

Post by ReyQii1902 »

I got it right now on injectors only struggle with spark it sparks and then it falls away like its giving correct pulse and then gives a weaker pulse
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PapaJo
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Re: Misfire on startup (2l 8v 2e)

Post by PapaJo »

What is your coil charge time set? Should be set at 2ms
ReyQii1902
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Re: Misfire on startup (2l 8v 2e)

Post by ReyQii1902 »

Must i change it on the laptop
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Re: Misfire on startup (2l 8v 2e)

Post by ReyQii1902 »

I dont know if it's going to make problem clear or not but as soon as i touch the battery terminals on the battery it gives me a sudden spark
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PapaJo
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Re: Misfire on startup (2l 8v 2e)

Post by PapaJo »

I think you need to double check your wiring as per Dicktator drawing first. Sounds like you have something wired to the wrong place.
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Re: Misfire on startup (2l 8v 2e)

Post by ReyQii1902 »

Thanx i just want to make sure im unsure about my ve- where they should be connected and do i need a seperate 7 pin module added or can i connect it straight to my coils
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Re: Misfire on startup (2l 8v 2e)

Post by ReyQii1902 »

Do you guys maybe have correct setup to load for audi a3 1.8t 20v struggle with settings got it started but revving is my issue now
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