[V8] 2 Questions: Tires & Gas Mileage

[Jeremy Ward]

I agree with everything said so far.  

FPR - can cause Alfred E. Neumann syndrome, so change it out if it is more
than a couple years old.  Don't forget to pull the fuse on the fuel pump
relay and crank it a few times to release some of the pressure in the fuel
rail, otherwise it can get in your eyes in addition to making a mess.
Thanks to cobram for this how-to:
http://www.geocities.com/cobramsri/Regulator.html

Injectors - No experience, but if one is stuck open, this makes sense.  Many
shops can do an injector test / cleaning for you if you remove them and
bring them in.  Be careful of the brittle plastic electrical connector and
the rubber O-Ring.  I believe Dave / Shawn found a source for these if yours
disintegrate on removal.  Don't forget to do the instrument cluster check
listed on Scott's webpage which includes a cycle of all 8 injectors:
http://www.sjmautotechnik.com/trouble_shooting/ecufv8.html

Thermostat - If your car isn't ever hitting 86deg C after warming up for
5min REPLACE THE T-STAT.  Thanks to Ingo for pointing this out to me, the
needle should sit just under 100 mark at all times.  If it is *much* cooler
than this your gas mileage will suffer (~2mpg), you will get a sooty
tailpipe, and you may experience premature O2 sensor failure.

1 new injector - $140
1 new injector seal - $4
1 new Ford F350 O2 Sensor - $50
1 new Fuel Pressure Regulator - $160
1 new Thermostat & gasket - $20
24 beers of Tony's choosing - $28
Total cost?  Less than a new car payment or two ;-)

Hang in there Zay; there is nothing more fun to drive than a V8Q that is
running like a top.  :-)

Cheers,

- Jeremy



-----Original Message-----
From: v8-bounces at audifans.com [mailto:v8-bounces at audifans.com] On Behalf Of
SuffolkD at aol.com
Sent: Tuesday, September 26, 2006 2:14 PM
To: v8 at audifans.com; RCAMPOZANO at mgmmirage.net
Subject: Re: [V8] 2 Questions: Tires & Gas Mileage V8 Digest, Vol 35,Issue 9



Thermostat?

-Scott by BOSTON