Thank you
They were cleaned not too long ago. For this I removed and took them to be ultrasonic cleaned, replaced filters and all of that.
Thank youWhen was the last time the fuel injectors were cleaned?
And that does not mean pouring some "cleaner" in the gas tank.
Thank you,Sounds like you have the mechanicals covered then. Have you actually tried to pull codes? Just because the CEL isn’t lit or flashed doesn’t mean there are no codes. If you have not then try with the engine not running and then with it running. If you have then test the O2’s before you just throw more money at the problem. Have you checked the upper and lower intakes for vacuum leaks with carb cleaner and the engine running?
Sorry , yes the airbag light flashes NOT the Check Engine.Check engine is flashing? Or the airbag light?
When it’s warmed up, does it seem to have trouble hot starting? Stumbles a bit on start? Or does it fire up fine each time?
Thank youIf you're getting nothing but a coed 11, try doing a cylinder balance test and see what comes of it.
Thank you,Maybe I missed it, but what is the year of the car?
Stock harness in the car?
Something is not adding up, like a piece of important information is missing.
How exactly are you computing fuel mileage? Using the same pump every time?
And you are running 87 octane right?
Not driving around on E85 or something...
Thank you,You should use up as much of the fuel as possible, I check three or more tanks, JMO
I’d replace of course but it’s free diag so for that sake no harm no foul. If you notice a difference put new Bosch 02s inThank you,
Yes I agree, the only thing is that I will be that I’m making changes in between fill ups which I don’t care if I see improvements.
Just to mentioned some changes I already made:
* Replaced the ACT Sensor
* Dropped the ignition timing from 15* to the stock 10*
* And I know I will have my ass kicked for this but any how,
I verified my O2 sensors have no brand markings. Well I had two Bosch sensors and just for the sake of it I cleaned them by soaking them in thinner () for about twenty minutes then I red glowing them with my torch for like three minutes. Let’em cool and installed them before about 45 minutes of battery disconnected.
Started it up and felt a noticeable difference in performance.
I have to mentioned that those O2 sensors I cleaned gave me an error code in the past, well right now they’re working fine! Just wanted to prove or disprove the cleaning process I’d red a few times.
I will replace them, just was playing with these old ones.
Any thoughts on this crazy actions?
Thank you,With the 15 degrees base you should be running 93 not 87
If you keep it around 10-12ish maybe but even still I’d run better fuel
Thank youI’d replace of course but it’s free diag so for that sake no harm no foul. If you notice a difference put new Bosch 02s in
Put the timing back to 15 and put 93 in it
Thank you,Your parts list mentions a T5Z and 3.55 gears with 245/45/17 tires. You are using a 20 tooth speedo gear, right?
Si let me get this straight, some of you are replying with some very impressive numbers, FoMoCo published some numbers on MPG City/HWY/ and Combined. So with some mods can we get better MPG than the numbers published by Ford?Hello everyone
I was just wondering if any of you have any ideas about this ridiculously low MPG. ONLY less than 9.5 Miles to the gallon city driving.
I've seen many postings with much more modified engines giving much better mileage.
I was just running a small MPG study being conservative on my driving. shifting at around 2 - 2.5K
I don't consider my build radical by any means and the mileage should be much better than that.
I ran a scan and no error codes whatsoever. I've never tuned the engine but even like that shouldn't give me that bad of a mileage
My engine details are:
Production 302 block 0.030" overbored (306ci) w/ Flat top pistons
170cc twisted wedge heads with 61cc chambers,1 5/8" BBK headers,1.6 magnum rollers, and TFS stage 1 cam
65mm Throttle body and 70mm MAF tube and sensor with 19 lbs injectors, and 190 LPG fuel pump + Kirban FPR (39 psi / Vac. 0ff)
TFS upper and lower intakes and 3/8 phenolic spacer.
In fender high flow air filter,
Autolite plugs 2924 to 0.054''
MSD blaster coil and wires
Initial timing set to about 15 degrees.
UD pulleys, Griffin radiator, electric cooling fan w/Delta controller, and 200 AMP alternator
T5 Z specs transmission, 3.55:1 gears and 31 spline TruTrac differential/Mosser axles, and 245 45 17 tires all around
The two secondary converters were removed along with all the smog system. The EGR valve still working correctly
I just want to say that I'm not complaining, just it seems not normal.
.... And no, don't tell to buy a Honda, that is not the point: "THERE SHOULDN'T BE WRONG WANTING TO HAVE A LITTLE PERFORMANCE AND EFFICIENCY AT THE SAME TIME"
Right now my engine IS NOT efficient.
Thank you all for any help provided.
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