premium 95 RON not enough?

**robert112** · 05-10-2007 11:07 AM

Hi all,
New owner of an auto 97 prelude vti-r.

Check engine light came on the other day so I took it to hanny's to get the code pulled and it came across as code 23 - knock sensor.

He asked me what petrol I poured in and I said premium 95. Pete says that that's why and that this car needs premium 98.

Is this true? I didn't even put 98 in my s2000 and it never did this..

**DLO01** · 05-10-2007 11:29 AM

What does the book say to use?

It definatly would not say 98, unless its has some mods or tunned on 98.

**NSPYRE** · 05-10-2007 11:42 AM

prelude is rated at 95 RON. how very odd it should do this... could be shoddy fuel... could you hear your car pinging?

**krogoth** · 05-10-2007 11:53 AM

^yeh, werd u get ur fuel from?

and how long have u been hearing pinging for?

**robert112** · 05-10-2007 11:59 AM

I can't hear or feel pinging. it happened while cruising at 90km/hr on the m4
I got my fuel from Mobil.

I don't know what the book says to use as I don't have it.

**robert112** · 05-10-2007 12:29 PM

I'm also getting poor fuel consumption. 300km a tank with conservative driving (although its an auto)
I wonder if this is related.

**honda-prelude** · 05-10-2007 10:59 PM

Hey mate, i drive a 1997 Prelude Vtir, and mine has clearly stated on the inside of the petrol cap/lid in white bold writing, PREMIUM FUEL ONLY... check yours when you have the time, the previous owner may have removed the sticker though...

**aaronng** · 05-10-2007 11:50 PM

Did you have any work done on your engine recently? Someone might have knocked the knock sensor loose or damaged it.

**omgzilla** · 05-10-2007 11:50 PM

I only run 98 octane in my VTi-R EK4.

Have you been using ethanol blended fuel?

My parents have had alot of trouble with power loss and pre-ignition with the ethanol fuel in their cars.

I'd keep clear of it in anything other than a Holden/Ford/Mitsubishi family car.

**aaronng** · 05-10-2007 11:57 PM

^^ He said he gets his fuel from Mobil, which don't sell ethanol blended fuel (yet).

**NSPYRE** · 06-10-2007 01:10 PM

just because it says code 23 for knock sensor does not neccesarily mean that your car is pinging. you say u CANT hear pinging so as aarong said, could be something wrong with the sensor itself