mchristyuk
Junior Member
- Messages
- 668
If you think your car is "missing" or under performing a bit then your injectors might need a good clean.
Fuel injectors are typically very reliable things, and also quite simple. However they can get dirty which impacts their performance. A main dealer will no doubt want to sell you new injectors if the computer flags something up, but it is fairly trivial to take them out of your car and give them a clean yourself. For the sake of a few pounds it's worth a shot before resorting to buying new injectors.
The Maserati 3200 features Weber IW058 injectors which were also used in a number of Alfas, Lancias and the Fiat Coupe. They also appear to be a favourite of a number of boy racers and their hot hatch backs. However they also now appear to be quite difficult to get new anywhere but from Maserati.. and chances are they won't be available from there much longer.
I bought a rebuild kit from here:
http://www.turbonoz.co.uk/fiat-rebuild-kits/TNTIRKB0130.html
As with doing any work on your car, you do so at your own risk and please take precautions to block all open pathways into the engine and isolate power supplies, etc, etc..
Here is the process, it is dead easy and just requires an allen driver.
1) Locate your injectors, they are the things with the red connectors sandwiched between the fuel rail and the engine head.
2) Unscrew the pressure cap from the fuel rail and press in the valve to relieve any pressure from the rail.
3) Disconnect all the connectors.
4) Remove the two allen bolts holding the fuel rail down and pull out the four injectors on that side of the engine.
5) The injector has a filter inside it, a cap on the bottom to protect the spray nozzle, two o-rings and a spacer. The filter is likely to be stuck good and hard in the injector. I used a small screw to bite into the filter and then a tap with a hammer to persuade the filter out.
6) Give the body of the injector a good clean.. I used carburettor cleaner and a wire brush.
7) Flush the injector with solvent (again I used carburettor cleaner). To do this properly you need to “activate the injector†with a 12v supply.
8) You can use a battery and a switch harness.. or a power supply and an assistant to tap the wires on to the power supply. You don't want to hold the power on, just quick bursts to activate the injector as you spray the cleaning fluid through.
9) Put the new parts on to the injector and then put it back in the car the reverse of how it came out.
Have somebody watch over as you turn the ignition on and fire up for the first time to look for leaks and be quick to shut the engine off if one does decide to spurt petrol out because you haven't pushed it home properly into he fuel rail!
Fuel injectors are typically very reliable things, and also quite simple. However they can get dirty which impacts their performance. A main dealer will no doubt want to sell you new injectors if the computer flags something up, but it is fairly trivial to take them out of your car and give them a clean yourself. For the sake of a few pounds it's worth a shot before resorting to buying new injectors.
The Maserati 3200 features Weber IW058 injectors which were also used in a number of Alfas, Lancias and the Fiat Coupe. They also appear to be a favourite of a number of boy racers and their hot hatch backs. However they also now appear to be quite difficult to get new anywhere but from Maserati.. and chances are they won't be available from there much longer.
I bought a rebuild kit from here:
http://www.turbonoz.co.uk/fiat-rebuild-kits/TNTIRKB0130.html
As with doing any work on your car, you do so at your own risk and please take precautions to block all open pathways into the engine and isolate power supplies, etc, etc..
Here is the process, it is dead easy and just requires an allen driver.
1) Locate your injectors, they are the things with the red connectors sandwiched between the fuel rail and the engine head.
2) Unscrew the pressure cap from the fuel rail and press in the valve to relieve any pressure from the rail.
3) Disconnect all the connectors.
4) Remove the two allen bolts holding the fuel rail down and pull out the four injectors on that side of the engine.
5) The injector has a filter inside it, a cap on the bottom to protect the spray nozzle, two o-rings and a spacer. The filter is likely to be stuck good and hard in the injector. I used a small screw to bite into the filter and then a tap with a hammer to persuade the filter out.
6) Give the body of the injector a good clean.. I used carburettor cleaner and a wire brush.
7) Flush the injector with solvent (again I used carburettor cleaner). To do this properly you need to “activate the injector†with a 12v supply.
8) You can use a battery and a switch harness.. or a power supply and an assistant to tap the wires on to the power supply. You don't want to hold the power on, just quick bursts to activate the injector as you spray the cleaning fluid through.
9) Put the new parts on to the injector and then put it back in the car the reverse of how it came out.
Have somebody watch over as you turn the ignition on and fire up for the first time to look for leaks and be quick to shut the engine off if one does decide to spurt petrol out because you haven't pushed it home properly into he fuel rail!
