[diesel_mercedes] Diesel Injector Testing

 

Hosed again ~

 

I bought a home made Diesel Injector Pop Tester from a guy in Ohio , he converts those inexpensive hydraulic jacks to Pop Testers but this one was *so* poorly assembled the large diameter pipe you're supposed to screw in as a Diesel Fuel Resivoir , couldn't be screwed in because he'd welded the output pipes over the threaded hole .

 

Plus , he installed a broken pressure gauge , this wasn't any accident .he clearn just didn't care .

 

I persevered and ever so slowly & carefully dribbled in some fresh Diesel Fuel , then pumped it ,  dribbled in some more , pumped it again and so on until it had sufficient fuel to pump up the injector ~ no matter how fast I pumped it , it wouldn't create enough pressure to pop the injector and it leaked internally allowing the pressure to go down *instantly* as soon as you raised the  pump handle for the next stroke .

 

$125 flushed , what a jerk .

 

Now I need to rustle up some spare injectors and take them to my local Service Place where they'll usually Pop Test them for free if I get there at the right time and ask politely .

 

I always go in with a bunch and only keep enough to do my engine , then I give them the rest as a " thank you " for not charging me , I know they're always in need of cores for rebuilding .

 

The slight missing and resultant lack of power under load or upon full throttle is back , this morning as I was zipping up the Harbor Freeway @ 0-Dark:30 going 75 MPH , I reached a slight rise (NB @ Adams) and the car slowed all the way down to 62 MPH Maximum ~ I can *just* feel the cylinders loosing power and slightly missing like maybe an air intake leak in the fuel system ~ the last time I had this , it was my other Diesel Coupe and the hand primer pump was leaking Diesel ever so slightly ~ I see / smell no leaks this time but I also see it's the original hand primer so I'll go buy a new one and install it , see what happens .

 

After I transitioned from the 110 to the I-210 , I ran it up as fast as it'd go then I feathered the throttle until the engine was glassine smooth agin and held it there , after a bit it slowly began to accelerate until it reached 85 MPH and my exit (Baldwin Av.) came up .

 

This indicates lean running in spite of all the Diesel smoot on the Cove and the off idle smoke I see in my rear view .

 

I bet I have multiple issues going on here .

 

Stand by for more technical babble and gnashing of teeth .

 

-Nate

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