Nissan Altima shaking at idle

I don't know anything specific but I have heard that many of these cars have extremely complicated and expensive motor mounts. One guy I know spent nearly $1000 having the motor mounts on his Nissan Maxima replaced.

Four cylinder cars are more susceptible to rough idle than cars with engines of more cylinders. That is a fact.

Notwithstanding this, a four cylinder car can idle quite smoothely if the motor mounts are good, and if the engine is getting equal power out of each cylinder.

I would go very carefully on this... Be sure that the car is right before you buy. A miss on one cylinder can cause a shaky idle, but may smooth out a bit at speed.

A miss can be as simple as a bad spark plug or wire, but it can get to be much more complicated and costly too...like a cracked head or blown gasket, burned valves, etc.

I know exactly what the problem is as i have the same problem, its a leaking intake manifold gasket...

see link >>

damn nissan!

and I cant find a guide on how to replace it myself, repair runs around

snipped-for-privacy@nospam.nix wrote:

There is a host of reasons that will make that engine shake at idle. Vacuum leaks, bad injectors, air leaks (intake manifold gasket would be an instance of that), weak coil, bad gas, old spark plugs, egr, IACV clogged, etc. It might be a cheap problem, or it might be something expensive. If you can get it professionally diagnosed before you buy it, it might be OK.

Wow! $500? There is a Nissan factory near me.They build Nissan cars and pickup trucks and vans and suvs.Maybe I should phone them or email them about that gasket problem.I know what I will do,JT and Dave have their politics radio talk show Mondays through Fridays and at least twice each week they have their car talk show,people all over the state phone in about their vehicle problems.I will phone them about Nissan. cuhulin