Hi,
I just replaced OEM spark plugs at 52000 km on the Suzuki Vitara ; I'm worried about LSPI. See pics and more attached :
I just replaced OEM spark plugs at 52000 km on the Suzuki Vitara ; I'm worried about LSPI. See pics and more attached :
DI turbo spark plugs pics, what do you think, LSPI ?
- Thread starter Superflan
- Start date
That looks like ash. Are you using a full saps oil in that Suzuki? Can you use a low saps oil like a VW 504 approved oil instead?
Yes, as the owner manual is very loose on oil specs
I was mostly running 5W40 A3/B4 with a 7500km OCI
I can go to 5W30 ACEA C3 + VW 504.00/507.00 (mid saps ?) or 5W30 ACEA C4 (low saps, high HTHS)
What gasoline are you filling with? Brand and octane. Thanks
What fuel are you running, any additives in the fuel or oil?
I see Danno has the same thought.
I see Danno has the same thought.
They don’t look all that bad to me. I agree the oil could have played a part but I’m wondering about the quality of the fuel being used in that car. Also, gentle driving without ever airing the ‘ol girl out can cause that; short trips too. Just my .02 cents that, with $75 added to it will get you a cup of coffee on Rodeo Dr.
That looks like ash. I’d run a low-SAPS oil instead of mid/high-SAPS Euro-spec oil. D1G2(GM dexos1 generation 2) oils would be my pick for that engine if even available in Reunion Island. Otherwise, something that meets the latest BMW/Mercedes/VW spec and ACEA A5/B5 or C4/C5.
looks like bad gas or using excessive gas additives to me.
if that is a no, try lower saps oil.
lspi blows holes in pistons and other damage.. doesnt add ash deposits.
What kind of gas do you get on reunion island? maybe its not as good as other places?
if that is a no, try lower saps oil.
lspi blows holes in pistons and other damage.. doesnt add ash deposits.
What kind of gas do you get on reunion island? maybe its not as good as other places?
Last edited:
I run Denso TT plugs in my '06 Suzuki. I've never seen them look like that but of course my Grand Vitara is not DI. Too bad Suzuki doesn't still sell their cars here. They were reliable, inexpensive and good vehicles. I've had four of them and never any major issues with any. Same with their motorcycles.
The manual for his car specifically asks for a full saps oil. I don't believe it's the oil unless there's massive oil consumption going on.
Last Hyundai GDI I had in, and which had leaking fuel injectors, had 3 plugs that looked like that on one side. I suspect at least 3 injectors are leaking. I know there's a leak as the rail pressure isn't maintainede after shutting off and it should be.
Car is sheduled for injector replacement under warranty next week.
Last Hyundai GDI I had in, and which had leaking fuel injectors, had 3 plugs that looked like that on one side. I suspect at least 3 injectors are leaking. I know there's a leak as the rail pressure isn't maintainede after shutting off and it should be.
Car is sheduled for injector replacement under warranty next week.
Those plugs could go a lot longer, they aren't worn at all just dirty. As others suggested, hitting the gas pedal heavy a few times when traffic and lack of police allow is likely to burn it off.
It sort of looks like lead fouling from leaded gas.
It sort of looks like lead fouling from leaded gas.
Hi, I never used any fuel additive in that car. The fuel used is unleaded (RON 95, MON 85, so your AKI of 90). Ethanol free, ULSD (<10ppm)
The thing is, I drive it hard once a week, the rest of the time it's running a mix of door-to-door and casual driving. I'll probably try low saps oil. I've always been told DI makes PM (and that's why the vehicle is equipped with a particle filter)
Those plugs look to me like from an engine that never sees the highway.
A few seconds of heavy throttle won't do it. In fact that can increase deposits because it goes open loop and rich.
It would take 30 minutes or more at 100kph or more to get them hot and self-cleaning.
If that's not posible on the island I'd clean them with a fine wire brush or old toothbrush and reuse them.
A few seconds of heavy throttle won't do it. In fact that can increase deposits because it goes open loop and rich.
It would take 30 minutes or more at 100kph or more to get them hot and self-cleaning.
If that's not posible on the island I'd clean them with a fine wire brush or old toothbrush and reuse them.
Interesting point of view, thanks
the car gets 2x10 minutes crusing on 110kph road everyday ; the rest is uphill and downhill driving. I'd pull the new set of plugs 8000km later to see the evolution.It's a 3 cylinder engine. The middle cylinder spark plug was the less affected (white deposits, but grain and thickness even).
I've never seen plugs with crust like this in any of my petrol engines, but those were all indirect injection, or carburetors. This is the first DI engine where I pull the plugs.
But the air filter was dirty, I should have replaced it earlier.
Side note: it's funny how with OBD2 I can see some interesting things, like the throttle valve position. it have only a few points (like 3), and the max is at 85%.
That engine runs hot to the point where I can't pull the oil dipstick just after driving without burning my finger.
Last edited:
