car doesn't want to start at cold temperatures

1990 ACURA INTEGRA

160,000 MILES • 4 CYL • FWD • MANUAL

SHRUIKAN

MEMBER
1 POST
FOLLOW

Alright i have a 1990 integra gs and I recently put a cone filter on the stock tubing, sort of a ghetto rigged cold air intake. Since then the car doesn't want to start at cold temperatures, and even at normal temperature it still requires a little pumping of the gas pedal. This didn't happen before the filter was put on, so what's the issue here?

Dec 3, 2010 at 4:11 PM

KASEKENNY

CAR REPAIR CONTRIBUTOR
18,907 POSTS

I doubt this is a filter issue, but I suspect it is a fuel pump issue.

Basically, what happens is if you put an air filter that allows more air in then the pump needs to be able to produce enough pressure so that that there is enough fuel available to match that air.

Cold starts are the time when air/fuel mixture is most important.

So, let's start with checking the pressure and go from there.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

If the fuel pressure is okay, then here is a guide that will get us started on other possible causes that can cause this:

https://youtu.be/dCjmRL3p4Cs

I am attaching the process from the manual that will help with checking the pressure as well.

Please run through this and let me know what questions you have.

Thanks

Images (Click to enlarge)

Nov 25, 2021 at 7:13 PM

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