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  Mustangsandmore Forum Archive
  Ford Thunderbird
  87 TURBO COUPE FUEL ISSUE

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Author Topic:   87 TURBO COUPE FUEL ISSUE
brushwolf
Journeyman

Posts: 5
From: Rush City
Registered: Apr 2003

posted 05-22-2006 12:10 PM     Click Here to See the Profile for brushwolf        Reply w/Quote
Hi, Have 87 TC that has been sitting a couple years after being severely beaten on by oldest son and trailered home. Car still ran, but barely pulled itself and seemed to be missing. Son #1 thought it may have blown piston or head gasket, but oil pressure still fine. However, now son #2 wants car and we put a battery in it cleaned out the mouse poison and fired it up. Still runs crappy as it did when hauled home, RPM hardly enough to get turbo going, but think it is turning cuz sometimes boost comes up. Smells gas really strong, smikes black. However, 1 1/2 year ago I took car for a drive and while running same as described, I shifted to 2nd (T5 conversion)and motor stopped missing turbo cranked, and car ran normal and strong. Son #1 came back from 1 1/2 year vacation (courtesy of state) and test drove car, but it ran crappy again and has sat since. (Is it afraid to run normal again, for fear of more beatings?) I pulled intercooler and did compression test (145-152 range). So, I am guessing something to do with fuel delivery.
Plugs were all sooty, cleaned them up, no difference. Where is fuel pressure regulator and how to test? Any other ideas about what source of problem is (besides son #1)? Thanks

Whitson
Gearhead

Posts: 290
From: Western Canada
Registered: Dec 2005

posted 05-23-2006 11:39 AM     Click Here to See the Profile for Whitson        Reply w/Quote
The most common problem with those cars are spark plugs & wires. They eat them for breakfast.

The fuel pressure regulator is mounted on the fuel rail with a vaccum line running to it. The test port is a schader valve (tire stem). You should have between 30 & 40 psi at idle.

Also, check your VAM (vane air-flow meter) and make sure nothing built a nest in it and the doors moves freely. It's mounted under the air filter.

brushwolf
Journeyman

Posts: 5
From: Rush City
Registered: Apr 2003

posted 05-23-2006 03:04 PM     Click Here to See the Profile for brushwolf        Reply w/Quote
Thanks for reply. What device is used to test pressure (I am not too up on fuel injection...)? Thanks, Mike H

Whitson
Gearhead

Posts: 290
From: Western Canada
Registered: Dec 2005

posted 05-24-2006 05:44 PM     Click Here to See the Profile for Whitson        Reply w/Quote
You can buy fuel pressure test kits for cheap at any of the parts stores. The basic injection gauges are about $40, better kits with more attachments are $200+.

Any gauge with a 1/4" hose will work. Just screw out the center of the valve stem & use a hose clamp to attach the hose.

trashline
Gearhead

Posts: 2230
From: Levittown, Pa
Registered: Dec 2003

posted 07-15-2006 07:41 PM     Click Here to See the Profile for trashline        Reply w/Quote
FP at idle with the Vacuum line unhooked should be 39 psi.

It is a good idea to get a gauge with a braided line this way you can check the pressure while in boost.

It should go up 1 psi of FP with every psi of boost.

------------------
88 thunderbird TC 2.3L
Gillis at 18 psi, walbro fuel pump, Kirban afpr, 3.73 8.8" rear, rebuilt head, Ranger roller, .48/.60 T3 with clipped wheel, ported elbow, 3 in exhuast, FMIC

66 mustang V8 swap baby

68 Fairlane 289 w/ auto
rusting away motor is going in the mustang

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