AFR for b16a equip with b16b piston?

[Enthusiast]

Enthusiast..

I'm not sure what you mean by no connected to vaccum, as most fuel regs I've seen on honda are vacuum referenced, so when connected, at idle it will show 3 bar, and when at WOT, (where there is no vacuum, which is the same situation where you disconnect the vacuum line), it will show 3.5 bar

What I do is set the fuel pressure to 3 bar with vacuum reference (vacuum connected), then when at wot, it will jump up to 3.5. The difference is usually .5 bar for sards and honda units. For other brands.. I'm not sure.

As for your readings fluctuating, I'm wondering either you didn't screw it tight enough or something.. but with sards fuel pres, even finger tight won't deviate on a short test drive.

4 bar on a 1.6? And what ecu? Just curious about how rich you were running it all these while.

What meter are you using? So far, the only ones I've used is the sard's and a honda's one.

4 bar on 1.8.....i meant the meter is not connected to the vaccum sorry not the regulator hehehh....meter is just mounted on top of the fuel filter like how hattech said........meter is brandless bought from Amooil....

what i meant is everytime i set the pressure at 3 bar while engine is running........and i tighten it.........after i restart the engine the pressure shows 4 bar again.......every single time.......

 

[shiroitenshi]

4 bar on 1.8.....i meant the meter is not connected to the vaccum sorry not the regulator hehehh....meter is just mounted on top of the fuel filter like how hattech said........meter is brandless bought from Amooil....

what i meant is everytime i set the pressure at 3 bar while engine is running........and i tighten it.........after i restart the engine the pressure shows 4 bar again.......every single time.......

Test it with a proper meter.. it seems strange that fuel pressure cannot stay constant.

 

[J101]

the gauge in on-top of the fuel filter, the fuel travels into the fuel rail and on the other side of the rail would be the regulator.

1 bar is a big difference. tap another gauge on the regulator side and see the comparison.

it could be a faulty gauge or the vacuum hoses are expanded and gives incorrect reading.