Injector pintle end caps

[Michael Skolones]

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     "Rebuilt" is probably somewhat of a misnomer. Since I couldn't replace 
     the pintle caps and o-ring supports, my "rebuild" consisted of 
     replacing the o-rings at either end of the injectors, testing the 
     valves by applying 12V to the connectors and compressed air to the 
     fuel inlet, and repeatedly filling the injector with Gumout carb 
     cleaner.  At the same time I did this I cleaned the throttle body and 
     replaced some throttle seals.  After this my 250K+ mile engine runs 
     like new (well, almost) with the original fuel injectors.
     
     I'd say test your injectors using the spray-in-the-jar method.  If 
     they squirt funny (stream rather than mist), clean them with carb 
     cleaner and try again.  If they spray nicely, clean them anyway.  
     Switch 12V to them repeatedly on/off to see if they stick or leak at 
     all.  There's no way to tear them down, so if cleaning doesn't cure 
     them they need to be replaced.
     
     Try www.rprusa.com or 1-800-81VOLVO for RPR in Albany. They are a 
     Volvo-only outfit, but if you know the Bosch part number for your 
     injectors they might be able to cross-reference a kit.
     
     Mike Skolones 


______________________________ Reply Separator _________________________________
Subject: Re: Injector pintle end caps
Author:  diy_efi at coulomb.eng.ohio-state.edu at Internet
Date:    9/12/97 2:04 PM


At 09:12 AM 9/12/97 -0700, you wrote: 
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>
>     I just bought some injector rebuild kits ($3.50 apiece) for my '84 
>     Volvo LH-Jet; the kit included some O-rings, pintle caps and O-ring 
>     supports.  I got them at RPR Volvo parts, in Albany CA (they're on the 
>     web).  The kit instructions said not to replace the pintle caps if the 
>     originals on the FI were yellow (which mine were-I guess it's an older 
>     version of the injector).
     
I have four on a Fiat L-Jet system that probably could use a rebuilding.
     
Where did you purchase these kits?  Is rebuilding a good alternative to new 
injectors?  Will the rebuilt ones have comparable performance?
     
Ed Hilker aka "Chief"
'84 SS - 700R4
     
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