Mysterious Motor problems?

[Not_Nissan]

Okay so I buy this car from a guy here on the forums...1995 240sx base model...I test drive it and let it sit so i can just hear it running to make sure that it was a good running car...so I drive it 70 some odd miles to my house and go to the town I live in...I cruised just for a tad bit and then let my friend see it since he is in the s14 family...Everything is nice and dandy...So I get in to go to my house and stop at the gas station to check my oil...As i pull in and let it idle it starts making wierd sounds....Almost like a rod has been knocking for century's..It is loud, and defintly noticable....so i shut it off and let it sit there...then check my oil and it all is good...

So here's the problem:
If it ran fine all that way w/o any problems, at all...then why would it ALL OF A SUDDEN start doing it? Also...Whenever you are going down the road there's no noise at ALL...its just when idling...

Any info is great info

[steve shadows]

Okay so I buy this car from a guy here on the forums...1995 240sx base model...I test drive it and let it sit so i can just hear it running to make sure that it was a good running car...so I drive it 70 some odd miles to my house and go to the town I live in...I cruised just for a tad bit and then let my friend see it since he is in the s14 family...Everything is nice and dandy...So I get in to go to my house and stop at the gas station to check my oil...As i pull in and let it idle it starts making wierd sounds....Almost like a rod has been knocking for century's..It is loud, and defintly noticable....so i shut it off and let it sit there...then check my oil and it all is good...

So here's the problem:
If it ran fine all that way w/o any problems, at all...then why would it ALL OF A SUDDEN start doing it? Also...Whenever you are going down the road there's no noise at ALL...its just when idling...

Any info is great info


timing chain guides anyone?:coold: :whip: :sadwavey: :barf:

[Not_Nissan]

Previous owner said he replaced them last week...and he did...but the ? is did he do it right??

All seriousness...lol...Is this an "easy" fix? or replace the motor fix? Cause i just paid cash for this car today.....

[matthughes]

hey budro you can just buy my s14 and it will all be dandy..lol sorry i kinda ditched you on the phone last nite (she was blonde)...sooo yea how consistent is the noise? maybe just a rod cap? if anything else, give me a call later and we will finish her off right :werd:

[Not_Nissan]

HAHA....well I talked to grahm last night and he gave me some helpful tips...If nothing else me and you'll tear her down when it warms up...and ill yank the motor for set up for a ka-t....:boink: then we all can enjoy a semi decent 240 :drool: that way diesel's can shuv it here in cadiz....:rl:

[opponheimer]

Have you talked to the previous owner about it? If you think its knock, get an engine stethoscope from harbor freight, and listen to the block. I doubt its the timing chain guide, it could be lifters ticking too.

[Not_Nissan]

yea....but why all of a sudden?

[Not_Nissan]

Okay....so i tore the face of my motor off and figured out the problem...It is the bottom tensioner thats not holding my chain guide in place, henceforth not keeping my timing chain in a tight position right there....So...How do you release a timing chain tensioner??? Need help ASAP, gotta get my car back on the road

[ladiesman8527]

hey this is graham. go to this site http://www.240edge.com/manuals/usdm-cars.html and download the FSM for your car. that should tell you all you need to know about the timing chain system and everything else under the sun.

[Not_Nissan]

Thanks Man....nice to know your name on the forums now...How you like mine? I guess it's not suitable now that im sellin the datsun

Thanks for the info.

[Not_Nissan]

mods can remove or lock or what ever you have to do to this considering I fixed the problem..