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80 series 4.5L missing at idle
Posted: Sun Mar 16, 2008 8:33 am
by crosswire
I have an 80 series 4.5L petrol with almost 300,000km on the clock. Started missing terribly a couple of weeks back. I changed the plugs which appeared to fix it for a week or so. It's progressively gotten worse again to where it is rather annoying.
Only happens at idle and appears to be worse once it gets up to operating temp.
My next step is to replace the leads and see if that does the trick. If not move on to the dizzy.
If that doesn't work not sure where to next. Any body got any suggestions of what else it coul be?
Cheers,
Posted: Mon Mar 17, 2008 4:10 pm
by dow50r
Injecter is squirting, throw some additives like Wynns spitfire in the tank.
Andrew
Posted: Mon Mar 17, 2008 4:19 pm
by dumbdunce
dow50r wrote:Injecter is squirting, throw some additives like Wynns spitfire in the tank.
Andrew
x2.
Posted: Mon Mar 17, 2008 4:32 pm
by crosswire
Cheers guys,
Should I just get the injectors cleaned? I was intending on doing this at some stage anyway as it does have quite a few k's up now!
miss
Posted: Mon Mar 17, 2008 7:19 pm
by v8shorty40
mate do the leads,i had the exact problem only mine missed under load and idle.
put the leads on today(farking expencive $225.00) and fixed all the problems
Re: miss
Posted: Tue Mar 18, 2008 5:53 am
by crosswire
v8shorty40 wrote:mate do the leads,i had the exact problem only mine missed under load and idle.
put the leads on today(farking expencive $225.00) and fixed all the problems
Thanks v8shorty40. Will get some leads some time this week. Might chuck in a bottle of wynn's spitfire as suggested as well as it cannot hurt!
Will let everyone know how I go.
Posted: Tue Mar 18, 2008 3:38 pm
by tiler0172
I have had the same problem with my 96 model and the leads fixt it some time it can be one of the sensores in the dizzy
Posted: Tue Mar 18, 2008 4:09 pm
by shrekman
Has it ever had the valve shims done? They're easy to check clearances when you rip the rocker cover off (just check a manual for specs) If the clearances are tight it will cause a slight miss at idle getting slightly worse as things heat up and expand. Worse case scenario is burnt valves if left unchecked.
Posted: Wed Mar 19, 2008 8:34 am
by Troopy93
I'd be looking at getting the valve clearances checked,my brother had the same problem with his and ended up burning 3 valves, costing $ 2k + to fix it.......
Posted: Wed Mar 19, 2008 2:08 pm
by crosswire
You are scaring me now...... hope its just the leads! Guess I'd better find time to check it though! 