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Perkins diesel 4 cylinder.....runs rough at idle. grey smoke..will run up to 2000 rpms then die....very hard starting after that.....diesel in the crankcase. complete overhaul on entire fuel system.

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: fuel system

Check the fuel system, chenge fuel filter. clean the fuel tank.

Posted on Oct 19, 2008

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SOURCE: 2000 F-250 7.3 diesel, cuts out runs rough no power

Well, you have to let diesels warm up before you drive them so the engine gets warm and it may not sound right at first because if its not warm the compression gets off and doesnt fire right. If you try to give it too much gas before its warm, extra diesel will get in the cylinders and misfire. Then when it does fire, there is a lot of extra fuel in it so that causes the smoke and smell. You should always let it warm up for a bit before driving when you havent driven it for a while.

Posted on Oct 20, 2008

stormbrewin
  • 426 Answers

SOURCE: 1985 toyota 4x4 22re missing and rough idle

Have you pulled out the spark plugs to see if there are any tell tale signs on them.They are a good indicator of many problems that occur and can save a lot of time isolating the problem.They should all be the same colour.Is the air box and lid properly secured with no leaks or splits in the intake tube.Have you put injector cleaner in the fuel tank to clear up any possible dirty injectors.Therse a few things your problem could be including engine vacuum leak which you can find by lightly spraying carburettor cleaner around suspect places such as inlet manifold and around injector seals.

Posted on Oct 24, 2008

  • 14036 Answers

SOURCE: Rough idle and generally running terrible!

if idling rough sound like air in system.and your injection pump timing is off.

Posted on May 23, 2009

roniecon
  • 6826 Answers

SOURCE: the idle air control valve

if it is not running,and wont start,pull the idle air control and look at it,,is it stuck all the way out? if so this is ur problem

Posted on Jul 05, 2009

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1 Answer

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Sounds like not all the glow plugs are working.It should run fairly smooth on a cold start if all of the glow plugs are working..Also you shouldn't drive off on a cold start with a diesel,Its really hard on the motors..At least give them 10 to 15 min on a cold start..The oil in them is a really thick oil and when there drove on a cold start theres no oil lubricating the internal parts and will cause the motor to seize up..You may already no this and dont mean you drive it as soon as you start it i just wanted to let you know..When you get alot of white smoke it could be two things,Theres water in the fuel which will make it not have much power die and smoke..But if it runs fine when its warm theres some bad glow plugs...Hope this helps you and have a great day

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1 Answer

Hard starting diesel, at approxamately anytime temp gets below 45 degrees F. runs rough when started, smokes, then once warmed up no problem. Has quit on me twice in traffic.


only 2 things can maake a diesel run rough at start up ,,1--- air in the system 2----- 1 or more of the glow plugs not working. this sounds like the latter ,if you have a couple of glow plugs not working ,it will miss on those cylinders until it warms up ,and the smoke is mostll exesive fuel when it does fire . recommend you check the glow plugs

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2000 F-250 7.3 diesel, cuts out runs rough no power


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