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Re: Anyone have a spare Fuel Distributor to loan Posted by Gary Stottler [Email]  (#1463) [Profile/Gallery]
(more from Gary Stottler) on Mon, 18 Jan 2016 05:34:57
In Reply to: Anyone have a spare Fuel Distributor to loan, Brently, Sun, 17 Jan 2016 15:48:08 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Brently,
All of the ones I have are lambda and in dubious condition at this point. A couple of things you might check on yours tho:
1) Make sure there are no fuel leaks, either out of the distributor itself (into the engine compartment or around the plunger into the air metering mechanism). With everything hooked up and running, make sure there's no fuel flowing out of any of the injectors when the airflow plate is fully down (engine not turning).
2) Make sure the plunger slides smoothly and freely. It should just about fall out when you take the fuel distributor off. Don't grab it with any type of tool that would mar the machined surface or you will cause a leak. I have sometimes tapped the distributor on a block of wood to get the plunger to fall out onto a towel. You can clean the plunger with carb cleaner and Scotchbrite (again, nothing that could scratch it). Be careful trying to clean inside the barrel, you don't want any dirt or lint in there. Sometimes some carb cleaner or WD-40 will get the plunger sliding again.
3) make sure the airflow plate mechanism is clean (it's weight is important) and the whole mechanism moves freely/smoothly. You can take the whole thing apart pretty easily once you have the fuel distributor off and clean/inspect everything. I can get pretty gunked up from PCV vapors or dirt coming in on an air leak.
4) make sure there are no air leaks downstream of the airflow plate. The hole in the top of the box for the mixture adjustment screw, for instance, should be plugged - the little plug that was originally there is almost always missing.
4) any air leak in the intake system can cause problems - check all your vacuum lines. One that can trick you is if there's a leak in the brake booster, so you might want to block off that hose (warning! no power brakes!) and try it. Also, make sure the PCV hoses are installed correctly. All kinds of hoses and gaskets (cold start injector, throttle body, injector seals, intake manifold, etc.) can be the source of air leaks.
5) Last but not least, check line pressure and control pressure cold/hot with the pressure gauges.
Good Luck!
Gary
_______________________________________ Gary Stottler
, Mon, 18 Jan 2016 17:44:00, Mon, 18 Jan 2016 05:34:57 <-- Viewing This Message, Thu, 21 Jan 2016 06:00:51
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