ticking noise

[mrchoosy]

Hello,

I have an 1,6 NA engine. Installed the begi S3 turbokit with walbro fuel pump,OEM fuelrail and RX8 450cc denso injectors on a MS2

After installing this, I've heard a annoying ticking. The noise is coming thru the floor on the passengers side. It drives me nuts...
I want to get rid of this noise inside the car

All injectors are working simultaneous and are producing the normal operating tick.
BUT: this tick is amplified by the fuel rail and follows the fuel lines. I can even hear the tick at the fuel filter (which is also new).

What is the solution for this problem?anyone who has this ticking noise too?

thanks

[NitroDann]

You sure it isnt an exhaust leak?

[mrchoosy]

1000% sure

[chops]

not a fuel pump noise?

[sailaholic]

Walbro pumps are known to be a bit noisy

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[mrchoosy]

the tick is going faster as the revs are going up. the fuel pump is louder indeed, but a fuel pump makes a more constant (non ticking) noise I think.

[NitroDann]

If its not an exhaut leak then it;s the injectors, and thats just what injectors do.

Dann

[mrchoosy]

thanks for the reply
I know they make a typical ticking noise and this is the normal operating sound.

The problem is the loud ticking noise inside the car. I have compared this with 3 other cars with the same engine and injecors, also turbo modified. In the other cars, I've noticed the same tick noise, but barely hearable inside.

Mine is ticking loud inside (like a hydraulic lifter loud)
Again, engine is in perfect shape, no leaks, no HLA problems, oil new, rods ok
I can hear clearly the same tick at the injectors, fuel rail and even on the fuel lines under the car with my stethoscope.
So, I'm sure that I found the cause of the noise, but I don't know how to fix this

When you're listening in and around the engine bay, it's almost not hearable...

[Nevyn72]

Check the length of the fuel lines to see if any of the spacers are missing or out of alignment. If the lines are contacting part of the bodywork/chassis then this may be transmitting and/or amplifying the sound.... You could also try packing some dense, thin foam between the fuel lines and anything they come into contact with. Don't know if it'll make any difference but could be worth a try.

[mrchoosy]

thanks, I'll give it a try

good thinking!

[mrchoosy]

after further diagnose it seems to be the Walbro fuel pump or the OEM FPR who can't handle the high pressure.

When I pinch of the fuel supply to the rail with a plier , the noise goes away.
The fuel pump is a walbro 255. I've installed the OEM fuel pump back and the noise went away...

So fuel pressure is to high for OEM FPR? anybody wih the same experience? solutions?




thanks

[bear2230]

I have a Walbro as well but mine makes a humming noise. It annoys the sh*t out of me.
Unfortunately its the price you have to pay for more fuel and the alternative is holes in your block.

Richard.

[sailaholic]

Walbro are known to be a noisy pump. Maybe look at other options Richard.


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[bear2230]

At the time it was what my Haltech guy recommended but happy to hear if you have any alternatives.
I will ask my new tuner as well as the guy that installed the Haltech also bent 1 and 4 conrods and then said sorry man.

Walbro are known to be a noisy pump. Maybe look at other options Richard.


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[mrchoosy]

The problem is not the humming noise...

The walbro 255 fuel pressure is to high, or the OEM FPR is to weak for the Walbro pump. (changed with other OEM FPR, same results)