Miss fire and Knocking

#1 by Jasonbb1 , Tue Apr 28, 2020 7:39 am

Hello All
2003 L200 Warrior has developed a misfire and a knock a loud one , I cracked open the fuel pipes to 1/2/4 and engine tried to stall , cracked number 3 and made no change to the engine. Aha I thought injector gone , changed injector and made no difference . Swapped injector with another one that tested ok ( in case faulty) and still no change . Head tested fine ( no leaks , only changed 2 years ago with milners head) , haven't compression tested yet as had to order one and not delivered yet . Exhaust is blue/white with acrid smell of fuel ( guessing due to misfire fire on number 3 ) . Any ideas folks ??? im fearing the worst like a piston or rings issue but hoping that I can be pointed in a different direction or given some ideas where to look next .

Regards
Jason


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RE: Miss fire and Knocking

#2 by 123hotchef , Tue Apr 28, 2020 7:51 am

did u check the pump timing


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RE: Miss fire and Knocking

#3 by Jasonbb1 , Tue Apr 28, 2020 11:27 am

Hello 123hotcheck , I checked the marks on the pump , cam and crank shaft not actual timing of the pump .
Regards
Jason


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RE: Miss fire and Knocking

#4 by 123hotchef , Tue Apr 28, 2020 11:45 am

hum get the compression test done then


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RE: Miss fire and Knocking

#5 by 123hotchef , Tue Apr 28, 2020 11:46 am

u have the rocker cover off? are the rockers and pads all ok


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RE: Miss fire and Knocking

#6 by Jasonbb1 , Tue Apr 28, 2020 12:07 pm

Quote: 123hotchef wrote in post #5
u have the rocker cover off? are the rockers and pads all ok

Looks ok with no broken springs or rockers I did wonder if cam lobes may be flat


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RE: Miss fire and Knocking

#7 by 123hotchef , Tue Apr 28, 2020 12:11 pm

sometimes the plastic feet on the ends of the rockers dissapear!


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RE: Miss fire and Knocking

#8 by Jasonbb1 , Tue Apr 28, 2020 12:19 pm

Quote: 123hotchef wrote in post #7
sometimes the plastic feet on the ends of the rockers dissapear!

Will check them again to be safe


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RE: Miss fire and Knocking

#9 by The raging bull , Tue Apr 28, 2020 2:32 pm

sounds like timing belts slipped a tooth. this is what happened to mine a few month back


 
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Last edited 04.28.2020 | Top

RE: Miss fire and Knocking

#10 by Jasonbb1 , Tue Apr 28, 2020 3:06 pm

Quote: The raging bull wrote in post #9
sounds like timing belts slipped a tooth. this is what happened to mine a few month back

They appear to be ok at cam shaft and the pump but could it be 1 tooth out at the crank or is that just not possible ??


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RE: Miss fire and Knocking

#11 by 123hotchef , Tue Apr 28, 2020 5:40 pm

Anything is possible mate1 tooth out would do it


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RE: Miss fire and Knocking

#12 by Jasonbb1 , Tue Apr 28, 2020 5:57 pm

Quote: 123hotchef wrote in post #11
Anything is possible mate1 tooth out would do it

Very true , will check again when I do the compression test


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RE: Miss fire and Knocking

#13 by 123hotchef , Tue Apr 28, 2020 6:53 pm

is the bottom pulley ok?


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RE: Miss fire and Knocking

#14 by Jasonbb1 , Tue Apr 28, 2020 6:59 pm

Quote: 123hotchef wrote in post #13
is the bottom pulley ok?

Will check it incase its loose or wobbling can I check for crank play with pulley still on ?


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RE: Miss fire and Knocking

#15 by Heathen , Tue Apr 28, 2020 8:56 pm

Doesn't really sound like timing from what you've said, but you can check it with the bottom cover still on. When the marks on the cam and pump pulleys are lined up with the arrows, then the notch on the crank auxilliary pulley will be at 0 degrees on the timing marks on the lower cover.


|addpics|u5b-1-0d9d.jpg-invaddpicsinvv|/addpics|


'02 K74 single cab.


 
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Last edited 04.28.2020 | Top

RE: Miss fire and Knocking

#16 by Heathen , Tue Apr 28, 2020 9:04 pm

Once the aux belts are off, if the pulley is bad you'll probably be able to rotate the outer part all the way round it without the cam belt moving. If the key way is bad, you'll be able to rotate it a little bit one way or the other before the crank/cam starts moving. Only way to be sure though is to take it apart, then you can have a look at the crank sensor and plate to eliminate that.


'02 K74 single cab.


 
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RE: Miss fire and Knocking

#17 by Jasonbb1 , Wed Apr 29, 2020 9:48 am

Will have a look


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RE: Miss fire and Knocking

#18 by Nik Rite , Wed Apr 29, 2020 7:04 pm

If your pulleys gone,Ive a spare pulley in good nick ,your welcome to it ..n/c


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RE: Miss fire and Knocking

#19 by Jasonbb1 , Wed Apr 29, 2020 7:13 pm

Thanks nick great offer thank you , is the key a sod to change ? I've tried to change one


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RE: Miss fire and Knocking

#20 by Nik Rite , Wed Apr 29, 2020 7:16 pm

mine wasn't damaged so it was easy but there are guys much better than me on the forum will help you. Has the key sheared?


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RE: Miss fire and Knocking

#21 by Jasonbb1 , Wed Apr 29, 2020 8:45 pm

Am planning to.look at the weekend after the compression test


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RE: Miss fire and Knocking

#22 by Jasonbb1 , Mon May 04, 2020 6:54 pm

Quote: Jasonbb1 wrote in post #21
Am planning to.look at the weekend after the compression test

Right so .... test kit arrived lasted one test ( I really mean one test !!! Lol )and the gauge died not good !!!!! . New kit arriving tomorrow ( seally one this time so hopefully be a lot better build quality ) and will try again . I know its technicaly incorrect ( on a diesel ) but depentant on the test results I'm tempted to do a wet test on any piston reading low .any thoughts ??


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Date registered 04.25.2020


RE: Miss fire and Knocking

#23 by Heathen , Tue May 05, 2020 7:39 am

@Jasonbb1 - what was the brand of the rubbish one?


'02 K74 single cab.


 
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RE: Miss fire and Knocking

#24 by Jasonbb1 , Tue May 05, 2020 3:47 pm

Supposedly it was a Bergen but said technic on the box , £89 on amazon dont bother .new seally one worked a treat .


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RE: Miss fire and Knocking

#25 by Jasonbb1 , Tue May 05, 2020 3:52 pm

Ok so here we go , new kit worked as it should and findings where-#1 340psi #2 320 psi #3 210 psi #4 320 psi . Did a wet text on number 3 and it jumped to 290ish . So I'm thinking defo rings or damaged piston . Anyone done the rings on one of these ? As I cant reach out for help n the current climate I will have to leave engine in and work around it . Any advise would be great

Jason


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Date registered 04.25.2020


   

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