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Horrible gas mileage

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Old 04-28-2012, 05:42 AM
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Default Horrible gas mileage

I have a 95 civic with a 93 del sol z6 with a p28 swap and after 6 months it went from 37 mpg to 17 mpg and now idle goes up and down from 1000 to 2000.
I have new distributor,cap,ngk wires,plugs,pvc,cleaned Iacv,fuel filter and fuel psi is 35 and stil fauling all four plugs bad...
Old 04-28-2012, 05:50 AM
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Default Re: Horrible gas mileage

Timing off? CELs?
Old 04-28-2012, 06:01 AM
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Default Re: Horrible gas mileage

Originally Posted by grumblemarc
Timing off? CELs?
Could it jump a tooth on cam gear? because it havent toutoch the setting from before and theres no engine lights
Old 04-28-2012, 06:08 AM
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Default Re: Horrible gas mileage

I don't like dealing in could haves or would haves. You should actually check it. Mechanical AND ignition timing.

Also driving like a maniac will effect mileage. Is this car's engine modified in any way? Are you smoking?
Old 04-28-2012, 06:14 AM
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Default Re: Horrible gas mileage

I was just asking could of been possible it jump a tooth? short intake,header and i dont drive like a maniac...
Old 04-28-2012, 06:15 AM
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Default Re: Horrible gas mileage

Yes it's possible. But you already knew that before you asked the question.

Instead of wondering why do you not verify it?

And for the idle clean your IACV and FITV. Make sure there is no air in the cooling system.
Old 04-28-2012, 06:35 AM
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Default Re: Horrible gas mileage

Originally Posted by grumblemarc
Yes it's possible. But you already knew that before you asked the question.

Instead of wondering why do you not verify it?

And for the idle clean your IACV and FITV. Make sure there is no air in the cooling system.
Will do, Thank you
Old 04-28-2012, 12:12 PM
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Default Re: Horrible gas mileage

Check your fuel pressure regulator as well. Is the ECU tuned?
Old 04-28-2012, 03:22 PM
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Default Re: Horrible gas mileage

Originally Posted by motegicivic
Check your fuel pressure regulator as well. Is the ECU tuned?
The regulator is brand new and the Ecu is stock.Like i said it was giving me perfect mileage and all the sudden its started giving me bad gas mileage
Old 04-29-2012, 09:32 AM
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Default Re: Horrible gas mileage

Originally Posted by grumblemarc
Yes it's possible. But you already knew that before you asked the question.

Instead of wondering why do you not verify it?

And for the idle clean your IACV and FITV. Make sure there is no air in the cooling system.
Instead of wondering why do you not verify it? Man you need a woman or your on the period
Old 04-29-2012, 09:35 AM
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Default Re: Horrible gas mileage

Bipolar are we?
And I'm betting you haven't checked it still.
Old 04-29-2012, 10:00 AM
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Default Re: Horrible gas mileage

Originally Posted by grumblemarc
Bipolar are we?
And I'm betting you haven't checked it still.
Lol...HAHAHAHA!!!! Just giving you a hard time.To be honest im new to the honda scene i used to be into rotaries a few years back.So where should the distributor timing be set and can you advise me a easy way to check the mechanical side??
Old 04-29-2012, 10:16 AM
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Default Re: Horrible gas mileage

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