Outer Limits 4x4 Board

Hi my 1.3L pings when its got a bit hotter than it usually is or when its a really hot day and it loaded up. Its got new plugs, fuel filter, ignition timing set a 8" BTDC.

What else can i do

run 98 octane fuel.

mud4b wrote:run 98 octane fuel.

DITTO !!!!
run premium !!
mobil 8000 , or optimax work well !!!!

Agreed! I have to run prem. in both my zooks to stop pinging.

you get better fuel econ aswell.

Also Caltex equiv. Vortex Gold is good, anything 98 should do the trick.

BP 98 works well for my Feroza to help stop detonation. I've found it a bit better than the Mobil equivalent.

same with my vit, only way to stop pinging is to run BP Ultimate

I presume that if you are all having to run high octane fuel that there must be something wrong with all your engines? Surely none of the cars you've mentioned would have been tuned / built to run on a high octane fuel would they? I know that a lot of japanese cars are built to do so, but when you got your cars new, they wouldn't have pinged right?

I got the timing adjusted on my old 1.3 and got rid of the pinging... With that done and a rebuilt carby my little workhorse was going great guns til it starting smoking

greg wrote:I presume that if you are all having to run high octane fuel that there must be something wrong with all your engines? Surely none of the cars you've mentioned would have been tuned / built to run on a high octane fuel would they? I know that a lot of japanese cars are built to do so, but when you got your cars new, they wouldn't have pinged right?

I got the timing adjusted on my old 1.3 and got rid of the pinging... With that done and a rebuilt carby my little workhorse was going great guns til it starting smoking

i think it's more to do with the shit fuel that is sold nowadays

'100% Fuel, No Ethanol' coughBULLSHITcough

greg wrote:I presume that if you are all having to run high octane fuel that there must be something wrong with all your engines? Surely none of the cars you've mentioned would have been tuned / built to run on a high octane fuel would they? I know that a lot of japanese cars are built to do so, but when you got your cars new, they wouldn't have pinged right?

I got the timing adjusted on my old 1.3 and got rid of the pinging... With that done and a rebuilt carby my little workhorse was going great guns til it starting smoking

I believe (Being Japanese and all) that their petrol is of a much higher quality than ours.

Also remember we are asking more of our cars than was originally invisaged.

Mine for example only has 4.1 reductions on 32's with at least 200kg extra weight, makes sense that it would want to ping pulling all that up hills in hi range.

You should not have to run high octane fuel to reduce pinging.
If you retard the timing one or two degrees it should remove the ping.

Of course higher octane fuel is the better option, but if you want to still use the cheap fuel, retarding the timing should do just fine.

could also be running lean, and as to what a few have said - too much timing.. 2 minute fix.

Ferozas have a very common problem with detonation from new! I remember a friend bought one new in '96 and had detonation problems.

I only run factory spec for timing and still have detonation- I've even had the injectors cleaned and flow tested. The timing isn't controlled by the EFI, it's got the old vacuum advance and mechanical advance in the distributor which wouldn't help.

Ferozas have a very common problem with detonation

I've heard about a third do it Mine does unless you run BP Ultimate or Shell Optimax. It's not all that bad mind you when it does do it but can be a worry on cheapo independant servo fuel. Even on the good stuff if you let it lug just a bit it can start to knock

mj wrote:

Ferozas have a very common problem with detonation

I've heard about a third do it

I personally think about two thirds of people don't know what it sounds like!

My Vit never pinged on std fuel but that was 2 years ago, now I have to run Optimax or it pings its guts out. I reckon its the crap fuel nowadays. Besides that I get 40 to 50ks more out of a tank using Optimax. Plus it goes MUCH better.

I have just recently bought a 85 zook to play with, this way I can leave the Patrol set up for the long distance stuff.

You guys mentioned you are running high octane fuel, I thought that the older models had to run on LRP, is this not the case?

Biggles wrote:I have just recently bought a 85 zook to play with, this way I can leave the Patrol set up for the long distance stuff.

You guys mentioned you are running high octane fuel, I thought that the older models had to run on LRP, is this not the case?

Sorry for the confusion - the people running optimax all have unleaded only cars... i.e. more recent models than what you have.

cheers

You may be able to run premium ULP or 98 octane Biggles in your leaded Sierra. All depends on if your engine needs the lead or not- a lot don't.

That LRP stuff isn't supposed to be too flash from all the stories I've heard- supposedly causes a build up of gunk in your fuel system.

I had pinging probs with mine bot 1.3 and 1.6 litre motor .. played around with timing slightly, runs better pulls harder and no longer pings .. same case with a friends Zuk .. set to factory spec thing was useless play with timing a bit ran heaps better and had better top end speed as well.

The other thing to check is your fuel pressure. If you can find the fuel return line where it comes off your inlet manifold and clamp it off, you may well find it'll fix the pinging.....unfortunately that's not a permanent fix, but at least it will/or won't isolate your fuel regulator or fuel pump as the culprit.

I checked the fuel flow rate on mine and it was fine. Unfortunately I don't have a pressure gauge and fitting to see what the pressure is. I was thinking about getting a adjustable regulator and experimenting.

I spoke to my mechanic the other day about running high octane in the 85 zook, he says not a problem the valve seats are hard enough and that I should get increased power and fuel economy. He also agreed that LRP is crap and will gunk things up.
Put the fuel in today and will see how it goes. At the moment avg fuel consumption is 9.2 km/l.