560SEL Ignition help!
 

Okay, my 560 is back together and I'm trying to get her fired up. The battery is strong and the engine will turn over. The fuel pump is pumping fuel and I have to assume the spark plugs are sparking. Whats not happening is the engine fireing up. Am I missing having something timed properly? This is what I know and understand:

Known:
Cams everything on the timing chain circuit is timed.

Believed to be true:
Electronic Ignition takes care of itself and automatically distributes the spark

Is there anything else I need to make sure is in time (ie the fuel injector) or anything crazy I may have missed. Will the engine fire up if I haven't connected every vacuum hose up right?

I appreciate the help!


Scott

Also getting some pops, but It seems as though their popping when the intake valve is open since I'm seeing sparks come back up my throttle body.

Could the electronic ignition be aligning itself 2 strokes out of time so that it is finding TDC properly, but the wrong TDC so that its sending the spark out between intake and exhaust rather than at fireTDC?

Okay, so I disconnected the distributer, rotated the engine 360 degrees and reattached and even though it sounds better, its still not fireing... Do'h!

Air tubes
 

Check the air tubes leading to the fuel injectors. If they are not connected properly, it will not start.

Is the fuel relay working? Do you have fuel at the FD?

Check the round plug in the centre of the EZL and ensure it is plugged in well. If it is off, it will not start.

You just need 3 things: spark, fuel and compression.

I have fuel going through. When I've tried to start it before, I've gotten combustion but its coming back up though my air intake system. I do not have my air filter on yet. Once the engine cranks up, I'm planning on killing it then finish bolting on the air intake etc.

Fuel - check

Spark... well I'm getting flames so I assume I'm getting the spark since it's not my diesel :)

Spark - check

Compression. I'm taking that on faith, but its a VERY safe assumption on my part.



As I said, I'm getting flames, I just don't think I'm getting them when in the cycle I need them.


Thanks for the reply!

Scott

Timing
 

Since you said "the timing is correct", I assume that means all of the timing marks on the cams and towers and on the crank all line-up? But then you say you are not get flames in the cycle that is needed. ????

I hope someone with greater skill and knowledge than me responds, you've tried everything I think of.

Yes, mechanically, the cams are timed to the crankshaft, they all line up close enough to perfect (right side / passenger's side) cam is about 2-degrees off after the head work.

Does well does the distributer self time? Can you just set it in anywhere and it finds where it needs to be, or do you have to get it close to beginwith before it finds where it needs to be? This is about the only think I can think of. I'll try fiddleing with it this weekend when I have the time, but until then I'm hoping to get some good ideas to try insead of/if that doesn't work.

Thanks for the replys!


Scott

Are the spark plug wires properly connected? Follow the Zundfolge markings on the wires and double check everything.

Its Alive!!!
 

ITS ALIVE!

Issue resolved.


For future reference on 560 SEL 126 chassis 117 V-8 motor, (sorry, using keywords others like me in the future with the same problem) the distrubuter is not 100% self-timing!

You have to install the distributer so that it's close (ie the sprocket is timed to the engine), and the "self timing" feature fine-tunes the ignition. Since there were no markings on the distributer on where TDC was, I had to guess by setting the engine to TDC and looking into the oil filler port on the passenger's Valve Cover Gasket to see where the front cam lobes were (and thus determine wether it was at Ignition TDC or Intake TDC). I was then able by trial and error to try to start the engine, if it failed, remove the distributer spindle from engine, move the rotor one tooth, replace the spindle and repeat. Once I found the "sweet spot" the engine fired up, self timed and ran smoothly.

Kurt Weildheim is almost back on the road!