Hi, Oz Volvo is doing a user survey. Be a pal and fill it out? It's anonymous. https://goo.gl/forms/D3bI3n4k78N7dFq52

More Kjet issues, B27E

RobRob (@Rob) - Lockyer Valley, SE Qld
edited February 19 in Questions & Troubleshooting 5363 / 502joined Jul 2013
I looked long and hard at @gavinh 's B28E KJet thread ( https://ozvolvo.org/discussion/5903/b28e-kjet/p1 )and was very tempted to hijack it but my problem seems to be slightly different.

I pulled the 262 out of mothballs and have decided to get it on the road. I estimate it has been sitting for approx an eternity. I, as Gav did, started with the basics. I drained and flushed the fuel tank and lines, replaced both fuel pumps and the filter and now have fuel at the injectors. I have not yet replaced the cap, rotor, leads or plugs but they all look to be in good shape and the leads test ok. I seem to have reasonable spark at the plugs.

I have not been able to get it to start, it coughs and tries to fire but will not run.

Please bear in mind I am a genuine Kjet noob.

Does the main pump run the whole time the engine is cranking and/or running? While the tank pump does this I cannot get the main pump to run without bringing it at the fuse. I assume my pump relay may be faulty, if this is the case I can replace it easy enough.

With both pumps running (bridged at the fuse), engine off and injector 1 pulled out and laying across the rocker cover it is spraying fuel. I assume it shouldn't be... before rushing in and blaming injectors I wanted to make sure that the pump is intended to run the whole time, my other thought is that I may have excessive fuel pressure, perhaps from a faulty regulator or blocked return line. I have not yet tested it.

I have not looked into the fuel distributor/regulator, have never had one apart. Can something go wrong in there that causes the injectors to spray despite there being no airflow?

Looking for direction at the moment.

164fencesignature.jpg?m=1390588660

Current: 1966 120 wagon, 1970 162, 1973 164E + supercharger, 1980 262C, 1998 C70 T5 AWD Coupe, 2009 XC70 D5 LE
Previous: 1979 242GT, 1984 265GLE, 1985 740T, 1996 850R wagon, 1996 850AWD Manual among others

Comments

  • gavinhGav (@gavinh) Parmelia, Perth
    257 / 25joined Oct 2015
    You could have hijacked my thread, the more information the better, have you checked all the terminals for the correct voltage at the bosch control unit, coil and your getting feed back from the impulse sensor, also I replaced the plugs, as you they seemed alright but soon as I replaced them it made a better difference and any cracked or perishing vacuum hoses should be replaced as they are A c#@t when it comes to smooth running. A
    On a slightly different note, there is a character on turbobricks John lane who seems to know the ins and outs on prv like the dark of his hand as well as the Wealth of info on this site.
  • 5966 / 335joined Jul 2013
    Second, kjet is really sensitive to vac leaks. Worth going over.

    With the pump on and no airflow going past the fuel distributor, there shouldn't be any fuel coming out the injector.
  • edited February 17 221 / 20joined Jan 2016
    No it shouldn't flow. Eternity wouldn't be friendly to them.

    The injectors should spray only when the AFM plate moves and then very fine mist. Check you tube for a vid (some good merc ones).

    I have replaced a few from a donor car - they can be recoverable with cleaning.




    You get the idea - but need to work through a series of vids.
  • 245 / 17joined Nov 2015
    In the fuel distribution block you have a control plunger, I'll guarantee that is stuck and that's why your getting spray when the fuel pumps are running without touching the air sensor plate.
    Someone had this issue in Tassie, yellow wagon?? showed what to do and more importantly what NOT to do.
    bgpzfm142
  • 221 / 20joined Jan 2016
    In the fuel distribution block you have a control plunger, I'll guarantee that is stuck and that's why your getting spray when the fuel pumps are running without touching the air sensor plate.
    Someone had this issue in Tassie, yellow wagon?? showed what to do and more importantly what NOT to do.

    This - don't use anything other than light figure pressure when moving the plate.
  • RobRob (@Rob) - Lockyer Valley, SE Qld
    5363 / 502joined Jul 2013
    Thanks all for the advice. Will go digging tomorrow..
  • RobRob (@Rob) - Lockyer Valley, SE Qld
    5363 / 502joined Jul 2013
    So some more testing today.

    I replaced the cap, rotor, leads and plugs to eliminate ignition issues.

    With the fuel pump fuses removed the engine cranks, starts and runs for a second, then obviously stalls as it runs out of fuel and stops.

    With the fuses in the engine will start, run for a small period of time, flood and stall.

    Pull the fuses out again and it will clear the flood and run for a couple of seconds..... etc.


    I checked the fuel return line and it is clear.

    As I pointed out the other day, manually running the fuel pumps does cause the injectors to spray a little..

    I have not yet touched the fuel distributor but everything suggests that it has an issue. I have not studied how these things work exactly, will get studying now. I guess it could also be excessive fuel pressure (faulty regulator).

    I wonder if one from a B28 is the same as the one fitted to the B27? I have a spare if they are interchangeable.






  • 5966 / 335joined Jul 2013
    @Rob they're pretty straightforward. There's an adjuster screw. You'll want to replace the cork gasket if you're opening it up.
  • RobRob (@Rob) - Lockyer Valley, SE Qld
    5363 / 502joined Jul 2013
    FIXED

    replaced the fuel distributor with a known good second hand item and it runs like a dream...
    bgpzfm142
  • gavinhGav (@gavinh) Parmelia, Perth
    257 / 25joined Oct 2015
    Sound, I wish I had a spare B28 engine in my shed
Sign In or Register to comment.