Slight cold start knock

[superford3]

a friends marauder has a slight cold start up knocking sound then goes away and car sounds and runs perfect once warmed up a little, what do you guys think, is this normal or something to worry about ?

[Paul T. Casey]

Sure it's a knock and not an exhaust rattle? Maybe something else bolted to the motor that tightens up with heat?

[2,4shofast]

Sometimes when I start my car the Idler pulley chatters a little until it gets warm, Im pretty sure my bearing is shot...you could have the same problem:confused:

[Richy04]

Sounds stupid but if you take a few feet of heater hose and probe around the motor with it like a stethoscope you may be able to pinpoint its location. Richy

[Black_Noise]

its cause the oil is not very viscus . once it warms up all is good.

try changing the oil

[Marauderjack]

Timing chain tensioners clatter until oil pressure is up.....sounds like rod knocking!!!:argue:

Aluminum motors make a lot of strange sounds.....If it runs OK just keep going!!:beer:

Marauderjack:bandit:

[Zack]

Mine does it everyday, nothing to worry about

[RF Overlord]

superford, I have 2 questions for your friend:

1. Does his car have the fake OEM oil pressure gauge or a real working one?
2. What brand of oil filter is he using?

[superford3]

No the car is stock and I mnot sure about the oil filter

[jdando]

..... 2. What brand of oil filter is he using?

RF are you thinking that a non-OEM oil filter (without drain back valve) might lead to start up noise?

[FastMerc]

I was thinking what type of oil is he using?

[RF Overlord]

superford, you don't list a location in your profile, but if it's anywhere cold, tell your friend to try changing his filter to a Motorcraft FL-820S. Also be sure he's not using 10W-xx oil...the modular motors like 5W-20 and 5W-30 only.

If he's in southern Florida, then disregard the above... :D

[superford3]

I am from Eagan Minnesota

[superford3]

found out today it was a timing chain guide making the noise

[Stranger in the Black Sedan]

Cool beans. I always like knowing what is making a noise rather than assuming "it's normal, ignore it".

[Marauderjack]

found out today it was a timing chain guide making the noise

I think the "guide" you speak of is the "tensioner" I referred to in post #6??:cool:

I used to get a serious knock on start up after an oil change.....the dry filter had to fill!!:argue: I thought it was a rod knocking until a tech told me it was the tensioners and not to worry!!:beer:

I installed a remote filter kit and now can fill the filter with oil during an oil change.....thought it would eliminate the knocking.....nope!!:confused:

Been doing it for 165K mile and 35 or so oil changes.....STILL GOING STRONG!!!:beer::bows:

Marauderjack:burnout: