1979 280SE New to Forum

[ayhanlambaz]

Hello for the sunshine state.

I recently acquired a 1979 280SE and it's been sitting for over 4 years. The car with new battery turns over and starts for 5 seconds then goes off.

Any recommendations specific to this model ?
Beside oil and filters and plugs should I drain fuel ?

Would appreciate a list of what you would do if it was your new baby?

[rumb]

If you are lucky, 4 year old bad fuel is the problem. Any K-jet car that has sat for extended periods generally needs the entire fuel system gone over.  Drain fuel, replace filter in tank, replace filter by pump, replace all rubber hoses that look deteriorated.

Testing fuel pressures is going to be recommended.  Your Fuel distributor and WUR may likely need rebuilt -CIS Flowtech is the best place.

K-jet is the sum of all it's parts: all must be working correctly.

You already know you have spark, so now work on fuel system.

Does your air plate move down with light resistance and spring back? With the ignition on if you press down on it you should hear the injectors.  You can loosen line at injector and see if any fuel comes out.

Meanwhile lots of good reading on this site, dont forget the tech manual here.


https://www.w116.org/tech/

[raueda1]

If you are lucky, 4 year old bad fuel is the problem. Any K-jet car that has sat for extended periods generally needs the entire fuel system gone over. Drain fuel, replace filter in tank, replace filter by pump, replace all rubber hoses that look deteriorated.

Testing fuel pressures is going to be recommended.  Your Fuel distributor and WUR may likely need rebuilt -CIS Flowtech is the best place.

K-jet is the sum of all it's parts: all must be working correctly.

You already know you have spark, so now work on fuel system.

Does your air plate move down with light resistance and spring back? With the ignition on if you press down on it you should hear the injectors.  You can loosen line at injector and see if any fuel comes out.

Meanwhile lots of good reading on this site, dont forget the tech manual here.  https://www.w116.org/tech/

^^^Yes, all that. Absolutely DO drain and replace old fuel.  Rebuild the delivery system rubber stuff and go from there.  If you don't now, you will later and you don't want a fuel leak back there.  You're absolutely going to need the fuel pressure kit.  And go through the process systematically.  Jumping around will eventually make you crazy.  I'm a big fan of the CIS manual:  HERE.  There's another Kjet tech doc to that deep dives it, but the first is simpler and, most important, sequential.  Good luck and cheers, 

[ayhanlambaz]

Thank you on it 🙏

If you are lucky, 4 year old bad fuel is the problem. Any K-jet car that has sat for extended periods generally needs the entire fuel system gone over.  Drain fuel, replace filter in tank, replace filter by pump, replace all rubber hoses that look deteriorated.

Testing fuel pressures is going to be recommended.  Your Fuel distributor and WUR may likely need rebuilt -CIS Flowtech is the best place.

K-jet is the sum of all it's parts: all must be working correctly.

You already know you have spark, so now work on fuel system.

Does your air plate move down with light resistance and spring back? With the ignition on if you press down on it you should hear the injectors.  You can loosen line at injector and see if any fuel comes out.

Meanwhile lots of good reading on this site, dont forget the tech manual here.


https://www.w116.org/tech/