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fuel injector cleaning diy
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Posted by saab86 [Email] (more from saab86) on Sat, 26 Jan 2008 15:04:42 Share Post by Email
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Here's the relevant link

http://www.mikeponte.com/volvo/injectors.htm?1af6e640


You can make your own fuel injector pressure cleaner but will need to run a 7 or 10 watt light bulb (saloon bulb) between the injector connector and your 12 volt power source. Do not connect a 12 volt power source directly to the injectors for any length of time.

I did this procedure on my aircooled Westfalia with LJetronic - the injectors are similar to LH injectors. I used the injector connector from an old SAAB wiring harness. Use a bicycle pump and a bike tube cut so it can be clamped/sealed around the rail - leave the injectors connected to the rail and fill the rail with your choice of cleaner. Pressurise the rail with two or three strokes of the pump. Then run each injector for about 5-10 seconds - repeat two to three times. I had several old clogged/stuck injectors and found that rapping them on the table would sometimes unstick the solenoid. Some were completely clogged/stuck and were shipped off for exchange but not a rebuild.

BTW you can also use the bicycle pump/tire tube set up to pressurise your clutch/braking system making for easy pressure bleeding. Use an extra coolant cap which has the same thread size as the brake fluid container and dill a hole in it to accommodate the tire tube valve. Seal with Goop. DO NOT overpressurise the system or you may blow your clutch slave seals - two or three strokes is all it takes. Great for brake bleeding when you don't have a helper.


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