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Gtir Motorsport club » Tech room » Help and Advice » misfiring engine

misfiring engine

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1 misfiring engine on 4th September 2014, 6:28 pm

Mr pert 89


hi guys my pulsars battery died due to working away so removed and recharged put back in the car and now car seems to be misfiring and not running corectly at all, was running perfect before. I have changed airflow meter, sparkplugs etc. Has anyone got any ideas?? will be very much appreciated.

2 Re: misfiring engine on 4th September 2014, 6:43 pm

nomad

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Have you tested the alternater output ..... any more details does it turn over ok ??? Is the car standard .... also check the grub screw in the dizzy cap .... check earths ....


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3 Re: misfiring engine on 4th September 2014, 6:49 pm

Mr pert 89


no havent tested the alternator output. yeah starts first time but just splutters and smoking a bit out of exhaust

4 Re: misfiring engine on 4th September 2014, 6:51 pm

johnny gtir

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Fuel pump packin up ? How charged is battery ? Give us abit more info how mechanically minded are you ? Plugs gapped ok ? How longs it stood ie damp in dizzy ?

5 Re: misfiring engine on 4th September 2014, 7:01 pm

Mr pert 89


standard engine with as boost controller. no havent checked the dizzy and am not a mechanic by any stretch but am capable of doing with right guidance. was stood up for a month.battery was fully charged. not sure on fuel pump or plugs being gapped would it be easy to check ? i

6 Re: misfiring engine on 4th September 2014, 7:02 pm

Mr pert 89


what would procedure be with dizzy cap screw? all help much appreciated?

7 Re: misfiring engine on 4th September 2014, 7:23 pm

johnny gtir

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A month outside ? Where did you get plugs what kind of plugs are they
Sorry for all the questions some might be stupid just trying to get as much info to help

8 Re: misfiring engine on 4th September 2014, 7:44 pm

Mr pert 89


yeah a month outside plugs are ngk iridium ix brought from the web. no worries about the questions mate like i say was running perfect before battery went dead so any help is much appreciated

9 Re: misfiring engine on 4th September 2014, 8:00 pm

johnny gtir

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Change them plugs honest ther more hassel then ther worth. They work verry well in alot of cars my mate runs them no issues i had as do so many in a pulsar endless problems they foul (break) for fun use ngk bcr 8es ther way cheaper and work well

10 Re: misfiring engine on 4th September 2014, 8:01 pm

johnny gtir

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Gap them using a feeler gauge or buy pregapped to 0.7

11 Re: misfiring engine on 4th September 2014, 8:27 pm

Mr pert 89


Ok thanks for your help

12 Re: misfiring engine on 4th September 2014, 8:48 pm

GTI-R US

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Can't be his plugs as problem was before he changed them from what I gather

Check for dampness and condensation in dizzy cap and coil where leads plug in
As said check rotor arm grub screw to make sure it's still in there and rotor hasn't spun
Basically dry out and water seal every electrical connection as damp can cause havoc
If you've swapped afm and still the same it's more than likely one of the above


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13 Re: misfiring engine on 4th September 2014, 9:40 pm

johnny gtir

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My white car fookin hates them plugs would fire up then not splutter even on new sets it hates them full stop. Is it running on 3 ?

14 Re: misfiring engine on 4th September 2014, 10:11 pm

nomad

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Iriduim plugs are problematic ....or could be shit fuel ...


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15 Re: misfiring engine on 6th September 2014, 7:44 am

FPSChris

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I'm going for dizzy, plug gap or shit fuel causing a miss.
Mine was stood for 9 months outside in the shittest weather known to man facing down hill so all the water poured in the vents (now made a run off away from engine), changed oil, oil filter, fuel filter (z32), fuel, pump (walbro) and dizzy. Started and ran perfect first time

Got a cover over the plugs and they were new in December and have since replaced chain, tensioner and valves gapped so didn't bother changing again.

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