DPHC13

Hello all. I have searched all over the net and can't find any real answer to this problem. So my 2008 mustang GT 5-speed has developed a tick sound. The sound is directly related to the RPM's as it gets faster and slower with the throttle. It's NOT a knocking sound. It sounds like an electronic lighter. Like most electric ignitions on stovetops. I'm gonna try and get a video of it up when I get home. Thanks.

KenCarroll

. Your tick is normal, i own a 2005 and 2009 GTs. The ticking is the fuel injectors. If your injectors are not ticking then they are not working, no fuel. Equals no running engine.

KenCarroll

. Your fuel injectors. This is normal.

KenCarroll

The ticking is normal. Its the fuel injectors. All of them do this. I have a 2005 and 2009 GTs and both do this tick. Dont worry about it.

m05fastbackGT

I owned my previous 2005 GT for over 8 years and never noticed any type of ticking sounds whatsoever..

I now own a 2006 GT which I've had for almost a year now and have not noticed any ticking sounds either.. My current 06 GT also has a Saleen S/C !

laserred38

Could be an exhaust leak...

Beargap

+1, if you can hear it away from the vehicle with the hood closed, I'd vote on the exhaust leak.

05YellowGT

I had the wall on a rocker collapse, I know they're called something else on our engines, and it was making a ticking sound. The roller had seized up and was grinding the cam lobe down. However as most have said it could just be your injectors, but in my case it wasn't.

Boomer

BS!


They tick like a mother.


Must be your hearing going on ya :P


But seriously yes the ticking is normal under the hood.
I can even hear mine when it's closed, but moreso when its open.

Shotokan1509

ford4v429

hopefully its just injectors- but if its louder in one area...hmm...

just in case it *might* be a 'roller finger follower' busted a roller (only heard of two of them) might suggest a oil change, carefully cut the oil filter open, look for metal shavings- if theres a lot of glitter or worse, better get the wallet out. MTAS in here had one break and the hammering busted the head too- ouch.

heard of cam phasers failing kinda frequently, but its pretty loud from what ive heard on youtube videos- more than what most folks would call ticking.

DPHC13

Thanks for the replies. I've had my mustang for 4 years and I know the normal Ticking from the injectors but this is louder. Much louder. I can hear it loud and clear at a stop light. Im gonna pull the covers off and see if anything looks bad. I like the idea of cutting open the oil filter.... I just did an oil change today. Thought maybe a little 5W30 might shut it up but nothing changed. I pulled the wires off the injectors one at a time to see if any sounds changed but it all sound the same.

laserred38

Check the manifolds...I had a stock one crack at a weld on my '00 V6. It's very common on the SN95 V6s, but it's possible it happened to your 3v too...

cdynaco

Right. There's a few threads on it where they found massive filings and worn cam lobes. IIRC, a roller failed like you said which caused many filings which pumped into the cam phasers and scored the cam lobes and bore. New heads and cams complete (and pray the bottom end and oil pump did't get damaged or the oil circuit plugged). Worst case scenario though...

Some also have had chain tensioners wear causing tick from slack in the timing chain.

As you know, all OHC's have that nice clickety clack and whir sound up top - esp with the 3V having 24 working away.

But the OP makes it sound like this is different from what he has been hearing before and definitely louder than before.

Certainly worth draining the oil and inspecting. Also to pull the cam covers next. Perhaps you can isolate which side is making the tick. The old method of a long screwdriver or rod against the cam cover and against your ear (unless you have a stethoscope). Inspect those rollers. They could have been made better. Too bad those Jesel followers with roller bearings are priced out the wazzou!

Good luck!

GrammarGates

could be cam phasers, or there are small screens between the block and the chain tensioners, they can get plugged, which cuts the oil pressure to the tensioners, relaxing the chain which will make a lot noise.

ford4v429

never had mine apart, but *thought* the chain tensioners had a ratchet device so they can only advance- to prevent slack after car sits a while?

Austin Schroeger

Here is a video of mine. Its the injectors. I put a mechanics stethoscope on the fuel rail. Definitely injectors for me. Your issue may vary

Austin Schroeger

For reference, here is a video Roush Performance sent me of their 5.0. Verified injectors.

ford4v429

mine ( both the 06 and the 09 ) sound like the roush video- kinda a even clattering sound, similar to a old solid lifter cam, about same on both banks... the first video it seemed a lot louder on one, on the passenger side...guess injectors dont necessarily all tick the same

anyone know if its safe to unplug one at a time? I assume they are open collector transistor switched, but unsure

m05fastbackGT

You just read my thoughts Pete lol.

As my hearing is more than likely going from all the years of drone and just haven't noticed the injectors ticking