Pagoda SL Group
W113 Pagoda SL Group => Drive train, fuel, suspension, steering & brakes => Topic started by: mistertj on December 01, 2024, 21:04:31
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I posted what is below earlier today. Since that time I did more testing / trouble shooting. Disconnected and bagged the rest of the pump lines at the injectors. After cranking the engine many, many times, found that only injector line to cylinder #2 is producing fuel. The others are dry...totally dry. Any insight as to what is going on and possibly how best to fix, would be greatly appreciated. Have attached a few photos.
Been a year since I last posted on my 230SL cold start issue. I have made no progress since I haven't really done anything until now. Summer is long over so nice cooler working weather is here, I'm back at it. I did, however, do some things...filters, etc and have fuel pressure of around 7psi. (See photo) I also followed a couple of the previous suggestions and disconnected a few of the lines to injectors 4, 5 & 6.(See photo) Cranked the engine numerous, numerous times and no fuel coming out of the lines. No fuel to the injectors is the symptom and certainly would cause hard / no starting.
So...before I start disconnecting metal fuel lines, I wanted to ask for any input as to what might be going on and what my next steps should be before I start taking things apart. Car has been sitting for a year so there might be an air lock or whatever. Thank you in advance for any thoughts.
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Sounds like your injection pump pistons have frozen. Not too hard to get them moving again. There’s plenty of posts on the subject.
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Good suggestion from "Kevkeller" !
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Kevkeller - Your comment captures what I found the situation to be. All 6 cone valves were frozen and a number of pistons along with the rack. I think the #5 piston was the one really stuck but I treated all of them the same and with carb cleaner and penetrating oil, freed them up. The cone valves were easier to free up and once cleaned operate smoothly. I fashioned a puller to put pressure on the rack while I worked on the pistons. All came together nicely. Now waiting on new valve seal washers so I can put everything back together.
Thanks for the input.
TJ