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Dunlop Ultex
Dodge Dakota
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4/28/2006
21:00:48
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 Subject: Normal Fuel Injector Ticking
IP: Logged
Message:
I believe my fuel injectors are ticking louder than I am used too. Is this normal?
I also believe my timing chain may be knocking. Could this cause the fuel injectors to tick louder? The ticking noise is louder on hills (not a valve tapping sound).
I am considering changing my timing chain and sprocket. Will I need to install a new tensioner as well?
My truck is a 1999 Dakota 3.9L 4x4 V6 automatic.
Thanks for any assistance.
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Shatto
Dodge Dakota
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4/29/2006
01:45:45
|  RE: Normal Fuel Injector Ticking
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Message:
Oh, close the bonnet and drive the dang thing!
How about more info; mileage, oil, what you've done to it, etc.
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Shattosuckass
Dodge Dakota
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4/29/2006
04:29:17
|  RE: Normal Fuel Injector Ticking
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Message:
"How about more info; mileage, oil,"
OIL ????
jesus Shatto your such an idiot
here comes the amsoil bullsh*t again!
put 1oz. in the gas tank and
2oz. in the crank case all your ticking and troubles will be gone!
its magical stuff!
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Dunlop Ultex
Dodge Dakota
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4/29/2006
09:23:35
|  RE: Normal Fuel Injector Ticking
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Message:
Symptoms
• Ticking sound from throttle body area - sounds like fuel injectors (seems to be intermittent based on weather)
• Ticking is more intense as weather is colder 60° or below
• Ticking decrease when ambient air temperatures are 70° or above
• Intense ticking and vibration on long hills very noticeable during colder weather (especially holding the RPM at and above 2000 – sounds like it is going to come through the dash)
• Slight intermittent backfire at highway speeds
• Intermittent rough idle (especially if as soon as I bring it up to temp and turn it off to run into a store – when I come back out very rough idle but only intermittent)
Recent Repairs/Tweaks
• Performed TPS tweak
• Tested TPS and MAP sensor as per the Haynes Repair Manual (okay)
• Cleaned throttle body
• Cleaned IAC solenoid
• New distributor cap, rotor, bosch platinum plugs, bosch wires, PCV valve, ignition coil, fan, water pump, belt tensioner
• Running 20W-50 Castrol GT motor oil
• Fuel injector cleaner
• Pull plug wires one at a time to see if ticking stops but it only increases two fold
• Tested spark plug wire current with screw driver and engine block (lots of spark)
99 Dakota 4x4 3.9L
• 140,000 miles
• Only owner
• Second catalytic converter
• Needs new catalytic converter (sounds like a sick rattle snake)
• Catalytic converter does not seem to be restricting emissions (just passed Maryland emissions)
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zzark
*GenII*
4/29/2006
10:40:51
| RE: Normal Fuel Injector Ticking
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Message:
Run at night and look for arcing.
Arcing can make noise.
I think 20w-50 is too thick for our engines.
You should use what the owners manual states, probably 10w-30.
I suggest an oil change. Put a can a Seafoam in the oil to clean the engine, then install (10w-30) oil and new quality filter.
After I replaced the clutch fan with an electric fan, I noticed my injectors made alot of noise.
But it's normal.
zzark
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Gregg
Dodge Dakota
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4/29/2006
12:38:57
| RE: Normal Fuel Injector Ticking
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Message:
Very nice description and list. Use a mechanics stethoscope and probe around the intake and valve cover areas to isolate the sound origin. A cool tool is a stick, use a two foot wooden dowel pressed firmly against your ear where the other end touches suspect areas. Wood conducts the sound to analize the source. Where is the loudest spot? Try the top of the timing chain cover. Try each injector. Don't use a metal rod - BUZZZZZT!
A full can of Seafoam might be too much for the crankcase unless dumped quickly on an oil change. Read the can directions they recommend 1/3 can to oil.
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doug
Dodge Dakota
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4/29/2006
13:48:58
| RE: Normal Fuel Injector Ticking
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Message:
Possibly a sticky lifter, making a click-click noise?
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xmr2
Dodge Dakota
JOIN HERE
4/30/2006
21:50:15
| RE: Normal Fuel Injector Ticking
IP: Logged
Message:
Check your exaust manifold bolts. They are prone to breaking. An exaust leak will sound like a tick and drive you nuts looking for it.
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Dunlop Ultex
Dodge Dakota
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5/01/2006
12:45:25
| RE: Normal Fuel Injector Ticking
IP: Logged
Message:
Right now the weather is getting warmer, and I only notice the ticking sound on steap long hills. It is very annoying.
Thanks for all the help. I will keep troubleshooting and let you all know if I figure it out.
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J and J Auto
GenII
5/02/2006
05:08:35
| RE: Normal Fuel Injector Ticking
IP: Logged
Message:
unless you live in a desert 10w30w 10w40w
if you live in antartica 5w30w
with that many miles I am sure the injectors are
noisy but if they work ok egnore them they are
fine
timing chain and tensioner yes
Larry
J&J Auto
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J and J Auto
GenII
5/02/2006
05:14:42
| RE: Normal Fuel Injector Ticking
IP: Logged
Message:
In 1993 I bought my first fuel injected dak I took
it back 2 days later and told them to fix the
exhaust leaks
It was the injectors LOL
it was my first fuel injected vehicle unlike the
old 318 383's were there was not a tick to be
found
I know a guy who bought a new chevy with a big
block 8,000 miles and 3 transmissions later he
bought a dodge poor guy was almost crying with
the chevy
Larry
J&J Auto
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