Pagoda SL Group

W113 Pagoda SL Group => Drive train, fuel, suspension, steering & brakes => Topic started by: lamakdaddy on June 10, 2014, 19:44:29

Title: 71 Injection Pump Check etc
Post by: lamakdaddy on June 10, 2014, 19:44:29

I am restoring a 71 280sl.  It starting and idling well. However, I would like to get the injection pump checked and cleaned etc and perhaps rebuilt.  I see lots about Pacific Injections.. Is here any other firms that I can approach also?

Title: Re: 71 Injection Pump Check etc
Post by: 66andBlue on June 10, 2014, 22:48:18

H&R Fuel Injection / Jerry Fairchild Industries / Black Forest, LLC. / Koller - Bosch
Look up info in the Technical Manual here: http://www.sl113.org/wiki/Suppliers/Start

Title: Re: 71 Injection Pump Check etc
Post by: Rick on June 11, 2014, 00:41:20

There really is not a cleaning service for the injection pump.  If you remove it and send it in, it will most certainly be determined that it must be overhauled.  An overhaul is in the range of $2,000 now.  It is a good idea to rule out other issues before performing a pump overhaul.  The pump idle mixture is not hard to adjust,  but other adjustments become more involved. Check linkages and throttle valve settings, etc. .  You might also check the injectors as the poppets tend to leak often due to corrosion from time.  Even the injectors are now expensive but an overhaul shop will expect them to be sent in with the pump and defective units replaced before they set up the pump anyway.