On Wed, 15 Feb 2012 10:35:07 -0800, "Bruce L. Bergman (munged human
readable)" wrote:

On Tue, 14 Feb 2012 23:43:23 -0600, Ignoramus10095
wrote:

On 2012-02-15, PrecisionmachinisT wrote:

I probably would just check for the presence of voltage at the injector coil
during cranking.

Eliminates pretty much everything but clogged injector.

OK, now the 64,000 dollar question: can they be un-clogged?

Yes, but you might not want to drop $100 - $150 on the Mechanic's EFI
Cleaning Kit - And the engine does have to be able to start and run,
even if badly.

You basically disconnect the fuel line and screw on a special pressure
regulator and hose adapter gadget, then attach a pressurized 2-liter
bottle of special 100% cleaning solvent. The replacement bottles of
cleaner are about $20 or so each.

The extremely expensive Berryman's-B-12-Equivalency kit!


Then start the engine and run it at idle till the solvent has all run
through - and about halfway through the bottle you'll hear the engine
even out and start acting right, especially on Port Fuel Injected
engines where a clogged injector means a dead hole.

It's a beautiful sound, that.


On your TBI engine one side clogged means one side runs really lean,
and it'll run like a 4-cylinder if it starts at all. I'll bet there
isn't much (if any) crossover in the intake manifold between the two
sides. They deliberately do that to keep the velocities even on the
two sides, they each flow 4 cylinders in an even pattern.

Prolly so.


Just remember the rules, you can condense it down to the basics.
Requirements: Fuel, Spark, Air, clear Exhaust system.
Otto Cycle: Suck, Squeeze, Bang, Blow.
And get rid of the excess heat, Or Else.

I _like_ it!

--
Fear not those who argue but those who dodge.
-- Marie Ebner von Eschenbach