Honda F12x Big Turbo Lag

[JoeyDFZS]

Change those plugs run 93-98 octane fuel with some sort of fuel injector cleaner and let her rip........don't run it on the trailer so much that fouls them out also

[NOIDEA]

I will do that I am talking her for a test drive tomorrow morning . Only 93 – 95 octane is available in South Africa. Rick I know you suggested seafoam but unfortunately it’s not available in SA any other suggestions?

[JoeyDFZS]

I will do that I am talking her for a test drive tomorrow morning . Only 93 ÔÇô 95 octane is available in South Africa. Rick I know you suggested seafoam but unfortunately it's not available in SA any other suggestions?

Any kind of fuel injection or fuel system cleaner will do

[NOIDEA]

Ok I’ll see what injector cleaner I can get.

[NOIDEA]

Hi Guys here is some feedback. I added some fuel injector / fuel system cleaner to a full tank of 95 octane fuel. There is about a 10% improvement. Turbo takes about 4-5 seconds now before it spools. I must say as the day went on it got better and better. The only thing that is really bad is when you go WOT and slowdown to 35 mph and go WOT again it takes about 6-7 seconds before it pickup speed again. I took out 1 of the spark plugs and took some pictures.

[NOIDEA]

[NOIDEA]

[JoeyDFZS]

sounds like it has a fuel pick up problem.......that fuel pump has a filter sock..........it could be clogged

[JoeyDFZS]

did you run the tank out?

[NOIDEA]

Yes most of it maybe 3 gallons left. It is so strange sometimes it’s got so much power from the pull away it pushes you back in the seat and other times it would be so slow out the blocks and only do 50 mph. I know heat soak is an issue but it’s like you lose 20 – 25% of the power. I took my phone with me a couple of times to check gps speed and the one time I got it up to 92 kph (57.5 mph). Thanks Rick I’ll Check the fuel pump and filter.

[NOIDEA]

What do you guys think of the colour of the spark plug?

[NOIDEA]

I must also point out that it was a really hot day today about 32??c /90??f.

[JoeyDFZS]

sounds like a fuel issue to me I'd pull pump and check sock.....if its all crappy looking it could be your problem. when it heat soaks it will go back to 5500-5800 rpm wide open mid range pull should always be there.......ski could be starving for fuel when it lacks in power then some fuel gets through and it runs and pulls fine

[JoeyDFZS]

plugs look a little lean

[NOIDEA]

Thanks Rick I’ll check the pump and filter. I’ll see if I can make another test run this week. This time I’ll make a video that you can see exactly what I mean. The new plugs and injector cleaner definitely made a difference but it doesn’t feel as strong as my dad’s friend’s f12x. The other thing I did was putting her in reverse and opened her up, it reves up to 4000 rpm stays there for about 3 – 4 seconds and then just in a flash hits the limiter.