Fuel Filter - in line add on

[altaski]

Does anyone know of a kit or some other idea on adding a inline fuel filter to a CX7? As you know, the only filter is a sock on the fuel pump, in the tank. All cars have this, and most all until recently had an inline one to.

Is the fuel pressure real high right from the tank for the direct injection? This might be an issue in adding an inline filter. Or does the pressure get boosted up later on?

 

[erhayes]

Not sure where the pressure is boosted. Since there are TSBs out on the fuel pump, I would be opposed to putting anything in that system. If you had ANY fuel related issues, the dealer would certainly suspect that your modification was the cause, which might void the warranty for the fuel system. JMO Ed

 

[altaski]

Fuel tsb

Which tsb is that? I havn't seen it in the list people post.

 

[erhayes]

TSB 01-022/08 for Speed 3 & CX7

 

[altaski]

tsb 01-0221-08

Can you be more specific on this tsb 01-0221-08 I cannot find any tsb on this.

 

[erhayes]

Do a search on this NG. "fuel system TSBs"

 

[altaski]

add on fuel filter

Is there no one out there interested in this? Or has done it? ie The original question.

 

[Alpha Wolf]

Due to high pressures involved this is not like a normal car which just has to fill a float bowl in a carburetor or squirt gas into an intake. Any leakage would result in a massive amount of gas being pumped out into the engine bay with possibly extremely bad results.

It must have a filter in the tank or between the tank and the high pressure pump. As the tinny nozzles will clog if their are contaminates in the fuel being injected.

Thus, if the engineers have installed one good enough to prevent this, why would you want to add another one which if done wrong could lead to a fire?

Have you had fuel contamination issues?

 

[altaski]

that's part of the question

Is there high pressure out of the tank? Or is it not?
If not,then ad a filter after tank but before the highpressure pump? We all know fuel pump socks are not the greatest filters. And that is all this car has!
And the mfg go to this to cut costs. The dealer even said my beloved CX7 is a throwaway car. Run it till it gets the fuel system plugged up and thro the car away~! Sorry I dont' operate that way. I try to promote longetivity.

 

[erhayes]

ALTASKI: I checked my factory manual and found the following. The low pressure (60-71 psig) has a pump mounted fuel filter. The pump mounted filter is NOT a sock filter as your mechanic? stated. The drawing is not detailed enough to ascertain if the filter is replaceable. The high pressure system (up to ~ 1,500 psig) pump is mounted on the engine. There is no other filter other than the pump mounted filter in the fuel tank. While I applaud your intentions, I think it is a foolish endeavor. You risk much, as stated before and so little to be gained. Throw away car? I think not as all or most all parts are replaceable. Your vehicle to use as you wish of course. Good driving. Ed Hayes

 

[erhayes]

As an added note: Please note that the low pressure side of the fuel system operates at up to 71 psig. This is a higher pressure than most fuel systems, so care in picking a fuel filter requires some prudence. Ed