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Author Topic: 18 miles a gallon?!?!?!?! WHAT THE HECK????  (Read 2488 times)

EZFEED

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  • Posts: 13
    • 1993 Capri, 1994 Capri
18 miles a gallon?!?!?!?! WHAT THE HECK????
« on: May 18, 2014, 07:54:21 PM »

 >:( OK no matter what I do Im only getting 18mpg?!?!?!?!? WTF?????

165 psi compression across all four cyl.
New plugs, new wires, new cap, new rotor, new timing belt, new air filter, new vacum lines.
Removed and cleaned the injectors.

What the heck could it be????  :-\
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Rocketman

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  • Posts: 5492
    • 91 BPT AWD Capri & 1991 XR2
    • http://www.werbatfik.com
Re: 18 miles a gallon?!?!?!?! WHAT THE HECK????
« Reply #1 on: May 19, 2014, 04:06:59 PM »

Have you tried pulling any codes?

Does the engine come up to normal operating temp?
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1.8L Turbo All Wheel Drive Capri... the "GTXR2"


blueamber

  • Sr. Member
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  • Posts: 450
Re: 18 miles a gallon?!?!?!?! WHAT THE HECK????
« Reply #2 on: May 19, 2014, 10:39:59 PM »

You have 2 capris?  How does the engine power in one compare to the other?  Bad/clogged cat?  What did the old plugs look like? Is there soot in the tailpipe? ...Chris
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twopass

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  • Posts: 24
    • 89 Festiva ,91 festiva ,92 capri NA,91 capri xr2
Re: 18 miles a gallon?!?!?!?! WHAT THE HECK????
« Reply #3 on: May 20, 2014, 12:20:14 AM »

02 sensor ,and or the temp sensor on bottom of the intake will make u have bad mpg.
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grantduffield

  • TeamCapri Supporter
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  • Posts: 124
    • 1991 Capri (automatic)
Re: 18 miles a gallon?!?!?!?! WHAT THE HECK????
« Reply #4 on: May 20, 2014, 08:54:14 AM »

I am not an expert by any means.  How does the car perform other than having low mpg?  Does it idle smoothly?  Maybe the air/fuel mix is out of whack?  I recently had a camry that developed a small crack in the air intake pipe that caused the mpg to plummet. 
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This is a very complicated case (car), a lot of ins, a lot of outs, a lot of what-have-yous.