need urgent help

[HVXII]

hey my VX s 2 commodore is coughing & spluttering when i accelerate whats the deal it dosent do it when its at as steady rev but when i accelerate
what could it be

 

[yobbo88]

not enough air intake... too much fuel to air mixture flooding it a little bit. if you accelerate really lightly does it still do it? if it does im lost not too good with anything other than my carbie 6. but yeah ill stick with my first guess. have a look at air flow meter etc

 

[EXCESSV]

it definately seems to be an air issue or maybe a spark plug lead....more likely air.
check air intake and air box not blocked, check purge hose on and any other general hose on especially around the throttle body

 

[yobbo88]

yeah you could check plugs and leads doesnt hurt new ones never go astray. another thing is mechanics sometimes do the dodge at services and dont clean or replace air filter. get it out and check how dirty it is... if its not too bad go over it with some high pressure air otherwise just get a new one

 

[HVXII]

ok well i had a look at the air filter & she looks all good theres enough suction (i think) i only checked the plugs like 2 weeks ago so they should be good as for the leads i cant see any externalo damage
and it only happens at a full throttle acceleration going up slowly dosent do it

 

[HVXII]

ok just took it for a strap up to ultratune & he said it might be some **** in the fuel filter or the spark plug leads but when i was straping it it was fine i think it needed a good reving to flush it out hopefully problem solved

 

[Tree cutter]

Sounds like it isnt getting enough fuel when you accelerate. I would replace fuel filter first and if that doesnt fix it the problem could be the fuel pressure regulator. Plug leads or spark plugs that are crook will normally make your car surge when accelerating but not cough or backfire.