wont start

my 1989 190e 2.6 auto refuses to start ive replaced distributor cap/ rotor arm/ coil/ ignition leads/ fuel filter/ 2 new fuel pumps and still no difference also checked OVP fuse which was ok any help
would be gratefull
--
Posted at author's request, using moderated http://www.AutoBoardz.com interface
Thread archive: http://www.AutoBoardz.com/wont-start-ftopict248410.html
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Was it running before? Do you have fuel pressure when you crank? It could be the fuel pump relay... which I think it part of Klima relay.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Might need to diagnose the problem a bit further for some help.
1. Crank the engine over and then pull a couple of spark plugs - are they wet and smell of petrol? Yes - fuel is getting through the carb - goto 2. No - there is a fuel delivery problem. Sort that out.
2. Put the spark plug back in the cap and rest it on the engine, then have someone crank the engine over. Look at the spark, is it a good blue/yellow, is it regular. Yes - the ignition circuit is working - but !!! No - you have to trouble shoot the ignition circuit. Best do a weblookup on ignition circuit problems and work through those, there are quite a few items that can cause dramas.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Are spark plugs fouled or dry?
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

do you 'see' a spark if you turn engine over when plug is out? Remember to ground the plug somewhere. Simpler yet, just pull the center wire going to the distributor and see if you get nice sparks.... try this in the evening.
cheers
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.