Hi guys I'm new in this forums I try to make my first thread but I dont know why they keep removing my posts!

Anyway 2 days ago I bought 1997 Nissan Maxima with 180k miles the engine was running great and so quite and very smooth nothing bad at all any way I drove it for while then parked it till next morning , started at morning I heard like timing chain tick for about 5 second then from there I got engine tick so went to mechanic and did compression test then cylinder number 5 have zero compression ! But what I believe the mechanic did broke my engine , he kept reving my engine to 7k rpm then after few times doing that rod knock occured he said oh you have rod knock ! I was like you kept revving the engine until this happen that knock was not there at first place !

I just want to know did he broke my engine or this rod knock was going to happen soon because of the zero compression in cylinder 5 ?

Thanks.

 

Sounds like that motor was no good from the start, not the mechanics fault, you can rev these engine quite a bit, maybe you had no oil

 

This is my first nissan. The motor was in good condition another mechanic checked it before buying it and there no sign of anything bad like rattle or vibrating . Im like shocked

 

Go back and demand a new motor from that mechanic. He broke your motor.

 

It's pretty difficult to achieve zero compression. Either the #5 piston isn't moving or it's got a giant hole in the top. Take it back to the first mechanic and ask him what's happened to the motor.

 

agreed, after you talk to the second moron again.

 

The first mechanic said probably timing chain jump and cracked tensioner which may lead to valve contact with piston and Piston hole but the other mechanic just make the condition worse by revving the engine , then he said it might be just your fate you're just not lucky !

I'm thinking to sell the car for junkyard

 

Before you do that, at least pull the plug in that cylinder and inspect the piston crown. The mechanic who claims there's no compression should have done that already.

 

Tell him that his luck will run out if he doesn’t replace your motor.

 

I will say just wow, everything happened so fast in a blink of an eye. I see you just bought this 97 maxima at 180k and the motor was in working order good condition no misfire ect. The car when you bought it was it a dealer car or a private seller does the car have service maintenance records and at least a state inspections and what passed or failed ect. The car with 180k should be a good working car and at this time around with 180k the motor will have a slight timing chain noise as the mileage and wear occurs the chains and guides start to stretch and weaken depending on the wear and tear and maintenance on the car will determine it's road ahead. They have a thread here on the org stating the chains and guides tend to get weak and they have a rebuild timing kits to fix the issues. Your car on the other hand was sounding like it was starting the timing issues but now the cyl#5 having no compression is hard to believe unless this mechanic has beaten your car and caused this with the rod knocking with low or no oil in the engine. I suggest you to get the papers and service record on this car and go over it and see anything that would of caused this. This papers should also be showed to the mechanic who drive your engine to the ground. The compression loss can be noticed with a quick check like a coolant loss or a smoke out the tail pipe and the oil on the spark plugs or engine over heating.

 

why would he rev it so damn high? what's the point of that?! 6.5k but I know what you're sayin...is this a common practice for engine timing rattle, to just rev rev rev? It would seem that diagnostic noise would be heard at 2k...tell him pay for a nice swap.

 

i've had a timing rattle since i got maxy with 129,000 and now she's at 292,000 and i've never fixed it and she runs the same. i've revved the **** outta maxy and punched her off the line at a green light and still do and no issue's except for stalling occasionally. that one mechanic must of over revved the heck out of your vq, there is a point in where you only go so high and do it so long but revving shouldn't cause major damage unless there was another issue like another orger said like the chain hopped a link. i don't like mechanics who rev the $hit outta my cars tho, not necessary to do for a long time, especially on an old engine like that.

 

Mine's got 450K and a slight timing chain rattle and I've busted a Buick Lucerne A** that didn't want my passing them gently, they floored it and I floored it and they disappeared rather quickly! Plus that Place racing intake and 2.5" exhaust was a surprise to them since it is so quiet below 4K rpm....I did grin a lot after that! The point is there's more to this story and maybe the mechanic shouldn't have free rev'd the engine like that I usually don't unless it's loaded! But anyway there's plenty of engines VQ30DE or VQ35DE out there!

 

I don't think that I'd list a Buick Lucerne as a conquest, especially since you do not even know if he was trying to beat you. But, whatever floats your boat.

 

lol

 

Stinking buick 3800 v6 motors are just wear and tear junkies. The buick Lucerne is a boat from what i seen and worked on on the past. The elderlys car a joy ride at most and some hood cats dope car pushin hard lol.