Autotech Connexion

1 325 $

1. Fuel Pressure Gauge
The fuel pressure gauge is calibrated in both psi (0-100) and bar (0-7). Use it as you would any other fuel system pressure gauge.

2. Engine Vacuumn Gauge
The manifold vacuum gauge is calibrated in both inches of mercury (0 to 30) and kPa (0 to 100).

3. Exhaust Pressure Gauge
The exhaust pressure gauge is calibrated in psi (0-15) and kPa (0-100). Use the special adapter included in the kit to to sample exhaust backpressure.

4. Fuel Volume Gauge
Arguably its most distinguishing feature, the Fuel Zapp flow meter contains a clear tube, calibrated to measure fuel flow in both liters/minute (0.3-3.3) and gallons per minute (0.1-0.87).

When connected to the vehicle fuel system, fuel flow to the injector rail passes through the Fuel Zapp. As it does, it raises a floating ball inside the clear flow tube. The point at which the ball height intersects the scale indicates fuel flow volume.

This fuel system is delivering about one half gallon per minute (almost two liters per minute). This is equal to about one ounce per second, more fuel than most systems need, even when the injectors are open to the max!

While not shown here, the pressure gauge on this vehicle showed system pressure being regulated at its recommended level. With both fuel pressure and volume at recommended specs, we know this system is supplying enough fuel for all engine operating conditions.

Use the clear tube to identify air bubbles, water, or floating debris in the fuel.

5. Pinch Pliers
Use these plastic locking pinch pliers to create a calibrated restriction for some flow tests, and for sealing off fuel lines when testing system rest pressures.

6. Hose Adapters
Screw this adapter into the exhaust in place of an oxygen sensor to sample exhaust backpressure. Any readings greater than 1 psi at idle or 3 psi at 2500 rpm, suggest a clogged exhaust.

All adapters are fitted with quick disconnect couplers for quick installation on the main Fuel Zapp test hoses.

Vacuum gauge and exhaust pressure gauges have barbed nipples for a secure sample hose fit.

Screw-in and banjo fitting adapters are also included for vehicles that require them.

The kit includes hose adapters to fit most common fuel line quick connects, as well as three “universal” hose diameters for systems with clamp-on hose connections.