timing belt

[4wdnut2012]

Hi everyone, I have a 92 ford maverick 4.2 petrol carby. I was wondering how much work this there to get to the timing belt to change it and how often does it need changing. I have had this vehicle for over two years now and its done about 285k and I dont think it has been changed or anything. Thanks for your help guys

[growler2058]

Diesel doesn't have belt/chain so I wouldn't think the petty does either

[NP99]

Is it a chain or belt on the 4.2?

[growler2058]

Gears from memory

[Irish]

It has a timing chain.

[Clunk]

Chain on the TB42, gears on the TD42

[4wdnut2012]

Hi growler2058 how do you adjust that.

I have run out of ideas what could be causing the car to back fire thought the carby and though the exhaust. I have tried changing the piontsand adjusting the timing and it still does it.

[mudnut]

My manual lists these items for a backfiring carby engine. Faulty Exhaust Gas Recycling valve (EGR), vacuum leak, valve clearances, carby fuel float level, stuck valve, or faulty valve spring and Thermostatic air system faulty and of course engine timing.

[growler2058]

Chain on the TB42, gears on the TD42

Being useful again clunk tutt tutt tutt

[4wdnut2012]

Hi mudnut I will check all those areas out.

The other thing is that its an intermitten problem