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914World.com _ 914World Garage _ 914 1.7 fuel injection help!?
Posted by: pt_700 Mar 4 2010, 11:35 PM
my 1.7 quit on me a few weeks ago. i have spark (seems a bit weak) and some fuel pressure in the lines. i understand fuel pressure should be around 29-30 but, i only get about 20 @ the port and the regulator's already all the way up. i removed an injector and cranked the engine but, no fuel came out. any ideas?
Posted by: benalishhero Mar 5 2010, 06:16 AM
Trigger points?
Posted by: Bleyseng Mar 5 2010, 10:00 AM
New fuel filter? fuel lines pinched? Old worn out fuel pump?
Posted by: Frost Mar 5 2010, 12:42 PM
Im having a no start/fuel problem with my 914 too, i wonder how yours is going to play out and if it might be the same problem as mines.
Posted by: Jeff Bowlsby Mar 5 2010, 02:13 PM
http://members.rennlist.com/pbanders/djetparts.htm#troubleshoot
Posted by: pbanders Mar 5 2010, 07:06 PM
I'm guessing a dead fuel pump. Follow instructions on the Pelican Parts web site to check the fuel pumping volume. Look for an article in the 914 section by Kjell N.
Posted by: pt_700 Mar 6 2010, 03:19 PM
thanks for all the tips! i poured a little fuel into the intake after removing the air cleaner and it fired right up momentarily so, i'm sure it's a lack of fuel keeping her from starting. although there's very little mention of it in my 3 crummy shop manuals, i'm suspecting the trigger points in the distributor. am i correct in guessing these trigger the fuel injectors? i have about 20 lbs of pressure in the fuel lines.
Posted by: 904svo Mar 6 2010, 04:48 PM
don't forget to check the ground wires on the back of the engine..
Posted by: pbanders Mar 7 2010, 09:13 AM
thanks for all the tips! i poured a little fuel into the intake after removing the air cleaner and it fired right up momentarily so, i'm sure it's a lack of fuel keeping her from starting. although there's very little mention of it in my 3 crummy shop manuals, i'm suspecting the trigger points in the distributor. am i correct in guessing these trigger the fuel injectors? i have about 20 lbs of pressure in the fuel lines.
While it could be the trigger contact points, with only 20 psig of fuel pressure and the regulator wide-open, I suspect your fuel pump. A good fuel pump is capable of over 60 psig of pressure and has to be regulated down to 30 psig.
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