To Clean or Replace Fuel Injectors
> ZParts,
> I read the info you had on starting a motor
> after a long storage. Wonderful suggestions.
> Help me on this one!!
> Some NAPA auto parts stores have the
> capability of cleaning injectors with some
> machine they use. I know that other places
> also offer the same service. It costs about
> $25.00 per injector. Do you think it's worth
> it? Obviously it won't fix worn injectors,
> but could get rid of some gunk. What do you
> think?
> Ian
---------------------------------
Ian,
$25.00 per injector seems too high. Keep in mind that a cleaning can only remove the carbon deposits in the needle and orfice area, but not the rust and silt debris that flow up to and partial clogs the incoming filter of the injector. That part can not be cleaned out easily if at all.
Even after you have cleaned a worn injector you are still faced with the problem that a worn injector will not seal properly and will either dripple fuel or dispense an overly rich mixture there after, thus causing stumbling and poor gas mileage.
I checked with a Nissan Master mechanic a moment ago and he said the heavy duty injector cleaners will usually clean out the carbon build up effectively, but you must know how to rig up a closed loop sytem with the proper psi pressure in order to run the cleaner through while the engine is running. (aprox. 15 min per can) This is not a cleaning proceedure easily employed by many home mechanics. The problem of a partially clogged filter will remain though.
I believe I have heard of persons that have claimed that they have purchased re-built injectors for as low as $25. to $45. each. The problem I see in that approach is the question of the quality of the rebuild. Buying moderately priced rebuilt injectors from a reputable source with a clear warranty is the wisest approach I can recommend if you can not afford new ones.
I frequently update my Z Tech tips section, Check the URL below often to see updates.
Good luck,
Eric Neyerlin - Z PARTS