Wrong spark, Right Spark, 480t/740t Injectors

martinholmesuk · Post by **martinholmesuk** » Tue Oct 26, 2004 4:49 pm

Bosch Super R6 285 (from my spares 480t) made it run like REAL crap.

Bosch Super 4's no good on my 480t. OK for 480ES so I hear.

NGK V groove (pants)

NGK V groove (close up and so black)

I have two set's of NGK V groove plugs.

Seems I don't and never had the correct plugs!

What the hell should I have? The exhaust pops with all of them.

Sorry for the pics but you need to know what your looking at without keeping new links.

Cheers

chris1roll · Post by **chris1roll** » Tue Oct 26, 2004 5:03 pm

Bosch Super 4's no good on my 480t. OK for 480ES so I hear.

Thjey are also shite on Es-s

NGK V groove (close up and so black)

they don't look too bad....

The exhaust pops with all of them.

You must be overfuelling then, and the excess fuel is being thrown onto the turbo. mine did it when i borrowed a Dump Valve.

for a standard car, NGK BPR6ES

turning the boost up makes combustion temps up, so they've cone a bit white. going to try BPR5ES next i think.

tobi480turbo · Post by **tobi480turbo** » Tue Oct 26, 2004 5:16 pm

Hi there,

I got the best results by using the original Volvo ones ...

regards

Tobi

chris1roll · Post by **chris1roll** » Tue Oct 26, 2004 5:36 pm

Martin, If I were you, before you make ANY modifications to your car, you need to get it running right in standard trim first, so I would go to volvo, get their recommended plugs, then get them to sort out what they messed up when they did your starter, and once its running well, drive it for at least 1000 miles to makes ure it really is better ( I allowed alomost a month/1500 miles and a cambelt change, after my transplant, before I started messing with it, to allow any gremlins to surface, none did thankfully)
It might cost money to get it running well standard, but it will be money well spent, and probably produce as much of a gain as a small mod done to it as is, if you see what i mean.

Only then can you tell whether any mods have made a real diifference to the performance of the car, or whther they have just compensated for the current shit running.

Also if you don't, and any of your symptoms get worse, you won't know whether it's the mods, or whther the existing problem has got worse, maybe pointing to a more sinister lurking problem.

All the above, with all due respect, and all IMHO of course, but it really what i would do.

Chris

martinholmesuk · Post by **martinholmesuk** » Tue Oct 26, 2004 5:42 pm

Hi Chris,

The 480 is standard. That's why it's going for RR on Friday but now I find it's got crap plugs.

Martin

JohnTurbo · Post by **JohnTurbo** » Tue Oct 26, 2004 6:28 pm

I too have been playing with spark plugs!

My misfire came back...wasn't cause by the dump valve, but by some mystery thing. Bought those dual platinum american ones....

Car ran like utter uber shit:-

no power, huge misfiring problem, and this morning only on three cylinders, barely idling at all.

So i cleaned up my 'volvo' marked original ones (which are only a year old anyway according to service sheet) and put them in, also i put on my new silcone/kevlar powertec leads.

Well its definately running perfectly now. Think the leads being naffed (it would seem) made the platinums perform worse than they would normally, but definately the originals are better.

martinholmesuk · Post by **martinholmesuk** » Tue Oct 26, 2004 7:27 pm

for a standard car, NGK BPR6ES

Just ordered them from spark-plugs.co.uk

480-Pelle · Post by **480-Pelle** » Tue Oct 26, 2004 8:09 pm

Denso Iridium Power works like a dream for me, standard Turbo-engine...
Very smooth idle and running.

//Pelle

dragon · Post by **dragon** » Tue Oct 26, 2004 8:13 pm

Yay, that's 2 Denso Iridium crew in da house!

Very amusing scrawlings on the paper, Mart - made me chuckle

chris1roll · Post by **chris1roll** » Tue Oct 26, 2004 9:08 pm

I also notice now, that the super 4s are "7",s which can't have helped.....

martinholmesuk · Post by **martinholmesuk** » Tue Oct 26, 2004 9:17 pm

dragon wrote:Yay, that's 2 Denso Iridium crew in da house!

Very amusing scrawlings on the paper, Mart - made me chuckle

glad you had a laugh!

martinholmesuk · Post by **martinholmesuk** » Tue Oct 26, 2004 9:19 pm

chris1roll wrote:I also notice now, that the super 4s are "7",s which can't have helped.....

What is the 7 all about ?

chris1roll · Post by **chris1roll** » Tue Oct 26, 2004 9:36 pm

The heat range of the plug.

Standard is 6

Mine is burning a bit hotter, making the plugs white, so i need a colder plug (or do i have that the wrong way round?) So i shall try a 5

Benji · Post by **Benji** » Wed Oct 27, 2004 6:48 am

Just put super 4's in my 2.0l es, and its running much better, used to get 125 on my favourite privat raod (honest officer

), last night got 130, which would suggest running better.

levin · Post by **levin** » Wed Oct 27, 2004 8:01 am

Hi,

Shouldn't be volvo (480 turbo) original ones Bosch WR7DC ? That's what is says in Autodata.

But it also says that the following can be used:

-Autolite APP62
-Beru 14R-7DU
-Champion RN7YC
-NGK ZGR5B-VG

Regards,

Jamo · Post by **Jamo** » Wed Oct 27, 2004 10:51 am

dragon wrote:Yay, that's 2 Denso Iridium crew in da house!

Very amusing scrawlings on the paper, Mart - made me chuckle

Remember who used them first and then told the forum.

I'l take a bow now thanks

mseigno · Post by **mseigno** » Wed Oct 27, 2004 2:34 pm

Hi
Since a lot of year i use Champion RN7YC on my 480 turbo with bleed valve fitted (0,75 bar) and no soucies.

johnd · Post by **johnd** » Wed Oct 27, 2004 4:17 pm

Hi Martin,

Didn't you have a play with the CO adjustment screw at some point?

Could it be you are running too rich because of that?

Did you get around to making the A/F gauge as this will help you narrow it down a bit.

John

dragon · Post by **dragon** » Wed Oct 27, 2004 4:27 pm

Jamo wrote:
dragon wrote:Yay, that's 2 Denso Iridium crew in da house!

Very amusing scrawlings on the paper, Mart - made me chuckle
Remember who used them first and then told the forum.

I'l take a bow now thanks

I wouldn't because I distinctly remember you comparing Denso with another brand (Bosch?) and then going on to say you'd gone for the non-Denso, ergo, I claim first usage. Because you said Denso didnt do the grade you wanted. I then immediately went and asked the questions of sparkplugs.co.uk and thus ordered Denso because I thought it best for my particular car.

So ner

catgroom · Post by **catgroom** » Wed Oct 27, 2004 7:14 pm

Mart,

NGK BPR 7EIX Iridiums from www.sparkplugs.co.uk at Â£24 for the 4!

Recommended to me by 2 480T owners from this site,they are the best plugs I have ever had.

ps aint we ad this convo b4-tee bloody hee!!!!!!!

Groomio!!

Volvo 480 Club Europe

Wrong spark, Right Spark, 480t/740t Injectors

Wrong spark, Right Spark, 480t/740t Injectors

Irids 4me too!!!!!