NKG LPG7 Spark Plugs
 

new post by me with pictures

https://www.volvoforums.org.uk/showt...16#post2452116

enjoy

Don't liek to rain on your parade, but LPG plugs border snake-oil. Brisk brand should be positively avoided.

LPG likes a narrower gap, and that's about it. Nothing wrong with LPG plugs, per se, but your money can be better spent. Use quality simple plugs. £10 a set on eBay, I shouldn't but I squeeze 30,000+ out them. You might be better to not follow me, and do only half that. They are fine to 35K, but I reckon harder on the already tired 250K coil-packs. I've had a four CPs in the same mileage. Started and ran fine, but I'm sure my tired 35K plugs were not helping.

The object of the LPG exercise is save money, so save it. Pay £2.00 each delivered. Denso K20PR-U 0.7mm

TOOOOOOOOOOOOOOOO LATE now they are in.

do they werk ?

Normal plugs are hard to find for the engine (but do exist :regular_smile:) due to the VERY LONNNNNNG thread. I always worry about them snapping and getting stuck with how long the thread is. I certainly would not want to leave plugs in for overly long amount of time


The advice on Brisk LPG plugs is right. If you have a set of them thow them in teh bin to save the risk of engine damage

Thanks 'classic'

Can i sell you some double-glazing? White plastic Disneyland front doors are all the go.

Last I checked, Scottish Power were selling cheap electricity to 'Frequent-microwavers'

Gotta love 'em.

seem to be working fine though even after a service with the LPG guy in Arbroath the overrun is not smooth (occasionally)

Apart from that the car is running well apart from leaving the LPG filler cap off once and driving off with it on the roof and then having to buy a replacement..I got a locking one so cant drive off with it on the roof like I did with the last one.

I swear by and not at the DENSO single point plugs, however one cracked recently giving a misfire (and the ceramic bit fell into the bore, non retrievable), the only plugs to hand were NGK BKR6EK twin point plugs. Whanged them in, perfect.

When I had my LPG V70 I found that the best plugs by far were the bog standard copper-cored Denso ones, as listed for the B5252S engine by Denso. From memory they came in at about £1.50 - £2.00 each I think!

I tried all sorts over the years it was necessary to change them every 10k, otherwise misfires would start to appear.

Fancy multi-pin plugs of whatever make would last no more than a few thousand miles, with Bosch being utterly useless.

I reckon to have used probably 25 sets of plugs in the 9 years / 250,000 miles I had the car, and never had any issues with the Denso plugs.

The other thing I did was to replace the plug leads every 70-80,000 miles.

For LPG to burn properly everything electrical has to be in really good condition, so I got into the habit of cleaning up the distributor contacts every oil change, and making sure that the lead guides were intact and not allowing leads to chafe against the cylinder head.

Jack

Plug leads
 

I agree everything ignition on LPG is critical. The simple copper core are good and cheap. I use NGK and Denso at 0.7/8.

As for HT leads, these are the most critical and since I sourced 'NGK Blue' leads the engine has been much better behaved.

I could only find them in USA, but my have in the UK now. Not cheap at £45 years ago.

BrianH 245 GL Now 2.3 engine. Converted 150k now at 730k