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turckster

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About turckster

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    Lubbock, TX

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  1. turckster

    Cold Regen

    Since you will be replacing the egr valve you should clean the 7th inj tip. We use Berrymans B-12 carb cleaner and a soft nylon brush but any quality carb cleaner should work. I wouldn't swap the dosing module. As a 7th inj. starts to get dirty its efficiency drops, that is it's adaptive factor (as the eecu measures it). When you replace or clean a 7th injector you need to reset the "adaptive factor" to tell the eecu to re calibrate to new. On Volvo/Mack software (PTT2) it's under the "aftertreatment diagnostics" tab, not sure on other software. During a regen the 7th inj. is at 100% to keep the tip clean(purging air), once the pre-dpf temp sensor reaches a certain temp then the 7th inj. starts to deliver fuel. Because the egr valve isn't closing all the way or leaking, it is cooling the exhaust temps enough to prevent proper temps. When going down the road under a load the engine was able to create enough heat to perform a partial regen. therefore the 7th inj. worked ok. Be careful when removing the egr valve mount bolts, they have a bad tendency to break off in the exh. manifold. Work them off slowly and use a lot of quality penetrating oil. When going back together use copper anti-seize on the bolt threads and under the bolt heads/spacers. Torque for the egr mount bolts is 35 ft/lbs. Good luck
  2. turckster

    Numbers on side the block help please..

    Need more information such as year, vin, model and so forth. That will help in identifying what you have.
  3. turckster

    Cold Regen

    Usually if the egr valve is ok the glove will expand a little but not pop. You will have some air in the fuel return when you start up an engine but it should go away in about 5-10 min. When not doing a regen the dosing valve will be at 100% to purge air--to keep the 7th inj. tip clean. Being under a load may have helped the regen to build temp but if its not happening during a parked or forced regen there is an issue. Many things will affect a regen form one reason or another, but not building temp is usually either a dirty/poor spray pattern on a 7th injector (adaptive factor percentage should tell you condition of 7th inj.) or an egr valve flowing slightly all the time. It will also cause frequent regens. Another thing to consider, with egr failures we have seen over temps with egr coolers as well (plugged). It may not happen right then but it will happen soon. Best to check inlet and outlet on the egr cooler if/when replacing the egr valve. Also, check the egr diff. psi sensor ports for excessive soot.
  4. turckster

    Cold Regen

    Your temps are slow to rise and never reach proper temps? is that correct? Problem could be egr valve never closing. Best check is to unplug egr valve electrical connector, removed egr tube that crosses the valve cover(since it the easiest to remove). Start the engine and there should be hardly anything coming out egr venturi outlet, you can hold your hand over the outlet with no resistance. We will attach a nitrile work glove on the outlet, with the engine running if it blows up and pops withing seconds you've got a bad egr valve. The egr gas will keep the exh. from reaching proper exh. temps during the regen.
  5. turckster

    Fuel delivery pressure.

    Check for trash in the bajo fitting on the eecu cooler plate. I think the top fitting is the inlet. If noting there check at the filter base inlet for trash. I've seen small bits of trash float around inside the inlet under that plastic cap and block off the tiny fuel passage.
  6. If you have fuel jn the oil it could be a leaking o-ring or through the injector plunger and or body. To determine which, remove supply and return line fittings, plug one and apply no more than 20 psi air to the fuel galley. Use soapy water to find leak.
  7. turckster

    2008 mp8 falls on its face

    How old are the injectors? Could be a cup leakage issue or the injectors could be the problem. When it is running poor? Is there air in the fuel return? You can see it in the return port in the fuel tank, if there are bubbles coming out in the return port you have leaking cups.
  8. There are cup plugs on the engine brake valve as well, make sure they are not loose or missing. Make sure the cup plugs on the rocker shaft are not missing or loose. Also, make sure all rocker shaft bolts are tight. It could also be an issue with the CCV spinner. There is a brass nozzle that sprays oil at the CCV spinner and could be loose or missing. Verify low oil psi with a mechanical gauge. Seen this issue several times on mp8 engines and response from e-service after checking everything was to replace the oil filter housing and that may be where you are headed. Attached is a PDF for low oil psi on a D11/MP7 engine, some of it does not apply to the D13/MP8 but it still has good info in it. 11 liter Low Oil Pressure Diagnostic Process_D11_Nov 2016.pdf
  9. turckster

    99 Mack will not start without ether

    Possibly the ground relay on the firewall. When trying to start, the relay pops open and you loose voltage to the eecu because either the relay is going bad/bad connection or the starter is drawing too much amperage/internal issue. Use a jumper cable to jump the ground relay terminals and see if it starts. If it does start you need to check the starter. Remove the ground cables, measure resistance from the starter ground pole to a ground point on the block. You should have an open circuit, if you have resistance the starter is shorted out internally.
  10. turckster

    Diesel in oil

    Fuel transfer pump can leak fuel into the oil, there is an fuel galley plug under the front cover that can leak fuel into the oil as well. Usually there is fuel weeping around the fuel galley plugs on the front cover if the plug(s) are leaking. Best thing to do is remove the oil pan, use the fuel hand primer pump to charge the fuel system and try to find where its coming from.
  11. turckster

    Def MP8 hard to start

    Check for fuel wicking around the plastic cap before the fuel primer pump. If you use the primer pump and fuel leaks around the cap you need to replace the cap--Mack has a replacement kit for it. If it is ok, remove the fuel tank caps, using a flash light check for air bubbling out the fuel return pipe in either or both tanks. If you are getting a consistent amount of air bubbles coming out the return fuel tube it is either leaking injector cup(s) or a faulty 7th inejctor "T"fitting check valve. Remove the air line to the 7th inj. "T" fitting, if it was faulty the air bubbles will eventually disappear. If the bubbles remain then most likely you have a leaking injector cup(s).
  12. turckster

    Drv solenoid/regen issue

    Make sure you have good air psi to the valve. Check and remove the eecu connectors to see if there is oil contamination. If there is the engine harness needs to be replaced along with the oil psi sensor and oil level sensor. A temp fix is to clean out the oil with electrical contact cleaner but the oil will wick right back----if oil contamination is an issue. Also, check the valve electrical contacts to make sure they are ok.
  13. turckster

    2180 gear failure

    Driveline issues coupled with synchronizer issues sounds like driveline angle/suspension ride height issues. A majority of synchro failures are from either improper shift techniques or driveline vibration (susp. ride height). The clutch brake failure is probably from improper adjustment, a bad wear surface (seal housing or throw-out bearing), or improper clutching technique. Suspension ride height is usually overlooked when transmission failures happen. If the ride height is OK then the driveline angle has to be off. Something is causing the failures you are having and angle/height is the most common issue.
  14. turckster

    Injector problems

    Need more details. What kind of failure? Faults? Blowing tips, leaking cups, electrical faults or mechanical faults?
  15. turckster

    E7 300 won't start

    I believe the shut off solenoid is located on the inlet port of the inj. pump. There is a service bulletin about gutting the valve to fix this issue.

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