Sputtering, backfires, and some CELs. [emoji24]

J

jkells

Ready to race!

• Jan 18, 2018

• #1

Recently, my car started sputtering and when accelerating it is backfiring with the occasional flickering of the CEL. First impression, misfiring so do coils and plugs. Replaced them literally 20 minutes ago. Nope. Still doing the exact same thing. Everytime I check the codes there is none.


What in the world can it be?

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smanierre

Autocross Champion

• Jan 18, 2018

• #2

Carbon buildup? How many miles?


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J

jkells

Ready to race!

• Jan 18, 2018

• #3

smanierre said:

Carbon buildup? How many miles?


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Click to expand...

Just swapped out the intake manifold and injectors last week. Through in HPAs intake manifold and Bosche injectors.

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smanierre

Autocross Champion

• Jan 18, 2018

• #4

Did you clean the valves?

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J

jkells

Ready to race!

• Jan 18, 2018

• #5

Everything was cleaned before the new install.


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smanierre

Autocross Champion

• Jan 18, 2018

• #6

Does the cel just blink or does it throw a code too

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J

jkells

Ready to race!

• Jan 18, 2018

• #7

When it does, it flashes and no it doesn't throw a code.

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brobst

Go Kart Champion

• Jan 18, 2018

• #8

What injectors?
And the hpa manifold should require a tune

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J

jkells

Ready to race!

• Jan 18, 2018

• #9

I am running the HPA tune and Bosch injectors.

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