How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Matt Your Own Question
Matt
Matt, Engineer
Category: Australia Car
Satisfied Customers: 20584
Experience:  Automotive Engineer for 20 years, BEng hons degree,
12772297
Type Your Australia Car Question Here...
Matt is online now
A new question is answered every 9 seconds

Gu 4.5 petrol and gas starting up rough and bouncing all

Customer Question

gu 4.5 petrol and gas starting up rough and bouncing all over the place switch over to petrol and it runs better but still some missing
Submitted: 1 year ago.
Category: Australia Car
Expert:  Matt replied 1 year ago.

hello

I'd suggest checking the gas supply pressure as the 1st step and as its running roughly on both gas and petrol then checking all the plugs for damage and plug wires for high resistance would also be worthwhile

and if this is OK then measure the compression pressures across all cylinders

Expert:  Matt replied 1 year ago.

Hi

do you still need help?

Bear in mind that the site takes a deposit from you at the beginning and this is held by the site until you rate my answer at which point the cash is split between the site and the expert. so if my answers have been helpfu lplease rate my answer.

Related Australia Car Questions