Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[woolley11]

Got a 3.0 MV6 - Tried to check spark plugs on the passenger side bank today - couldn't even reach in to get the plug leads off .

How ?? - seem to a lot of wiring etc in the way

[zirk]

Sometimes theres an Orange Plug Lead Puller attached to one of the Leads, otherwise some long nose pliers in there with a quick pull, try not to pull them by the leads though.

[Diamond Black Geezer]

Ahh worry not. They're a bugger. However, if you're after getting to them 'roughly' the quickest way is to undo the two Torx head studs on the NS of the plenum. Front and back. This will release the bracket for the clump of wiring loom. You should, in theory be able to just get to the HT leads... However, if not, then a little more wiring etc to be drifted out of the way. 

It does look a nightmare, but not too bad. Now just wait until you have to change the HT leads... then you're in for a treat! 

Not wishing to appear I'm going against the good Mr Zirk, but I'd not attempt touching them with long nose pliers... they're relatively hardy, but at the same time if you do damage them (and the damage will be invisible until you realise the car's misfiring) then you're in for the aforementioned 'treat' of replacing HT leads....

[terry paget]

And of course you have to remove the wiring harness and its plastic holder on passenger side if you want to remove the plugs. Note carefully where it goes, or you will have trouble putting it back

[omega3000]

Release the wiring harness then wrap a bungee cord around it and tie up the wiring . To get the plugs out i use a telescopic magnet once loosened ...

[Andy B]

.... To get the plugs out i use a telescopic magnet once loosened ...

Most spark plug sockets have a rubber insert in the middle that holds onto the ceramic 

[omega3000]

.... To get the plugs out i use a telescopic magnet once loosened ...

Most spark plug sockets have a rubber insert in the middle that holds onto the ceramic 

I lost my insert , but its a tight fit trying to get a ratchet small extension socket out once the plug is loosened especially the one at the back .. i just loosen them and the strong magnet turns the plug out . Also when putting them back in there is far less risk of cross threading with the magnet .. just my way of doing it 

[05omegav6]

Unscrew it with the socket, then long nose pliers make short work of lifting the plug out

[Nick W]

Like other areas of the engine, the wiring was laid out by someone who had clearly never done any work with his hands. That cable tray could easily have been either side of the plugs, not directly above them, which would have made N/S plug changes almost as simple as the O/S. The rear N/S is still a bit of a fiddle, but isn't a problem with a couple of wobble drive extensions. Refitting them with a length of rubber hose is worth considering if you're heavy handed.

There are other poorly thought out areas: the DIS pack location makes sense on a FWD installation but the Omega one doesn't for a number of reasons; the thermostat could have been fitted to the outboard end of the transfer tube; the rats nest of vacuum pipes and solenoids; HBV anyone?

[Andy B]

You think it's difficult replacing all 6 plugs on an Omega ...... try all 6 on a Smart Roadster 
First the rear panels  http://www.fq101.co.uk/how-to-guides/roadster/panels/349-coupe-rear-removal.html so you can see where the plugs are, and then you need to get the leads off, which isn't the easiest thing to do in itself http://www.fq101.co.uk/how-to-guides/roadster/servicing/366-replacing-the-spark-plugs.html 

[terry paget]

You think it's difficult replacing all 6 plugs on an Omega ...... try all 6 on a Smart Roadster 
First the rear panels  http://www.fq101.co.uk/how-to-guides/roadster/panels/349-coupe-rear-removal.html so you can see where the plugs are, and then you need to get the leads off, which isn't the easiest thing to do in itself http://www.fq101.co.uk/how-to-guides/roadster/servicing/366-replacing-the-spark-plugs.html 

Thanks Andy. Henceforth I shall regard changing plugs on an Omega V6 as a doddle.

[Nick W]

It could be worse; it's not unusual on modern V engines to have to remove (part of) the inlet manifold to change some of the plugs.

[omega3000]

You think it's difficult replacing all 6 plugs on an Omega ...... try all 6 on a Smart Roadster 
First the rear panels  http://www.fq101.co.uk/how-to-guides/roadster/panels/349-coupe-rear-removal.html so you can see where the plugs are, and then you need to get the leads off, which isn't the easiest thing to do in itself http://www.fq101.co.uk/how-to-guides/roadster/servicing/366-replacing-the-spark-plugs.html 

Bet your good at jigsaw puzzles 

[Andy B]

You think it's difficult replacing all 6 plugs on an Omega ...... try all 6 on a Smart Roadster 
First the rear panels  http://www.fq101.co.uk/how-to-guides/roadster/panels/349-coupe-rear-removal.html so you can see where the plugs are, and then you need to get the leads off, which isn't the easiest thing to do in itself http://www.fq101.co.uk/how-to-guides/roadster/servicing/366-replacing-the-spark-plugs.html 

Thanks Andy. Henceforth I shall regard changing plugs on an Omega V6 as a doddle.

Indeed! And as any straight 6 Carlton/Senator owner knows, the plugs on them are a pain to do .... especially number 6 

[Andy B]

You think it's difficult replacing all 6 plugs on an Omega ...... try all 6 on a Smart Roadster 
First the rear panels  http://www.fq101.co.uk/how-to-guides/roadster/panels/349-coupe-rear-removal.html so you can see where the plugs are, and then you need to get the leads off, which isn't the easiest thing to do in itself http://www.fq101.co.uk/how-to-guides/roadster/servicing/366-replacing-the-spark-plugs.html 

Bet your good at jigsaw puzzles 

The rear panels come off in one piece after eleventeen self tappers ...... not difficult, but time consuming.