Ruff Idle ,Huge Loss of Power

[Tripler]

Hey guys/gals . Was driving the 1995 Z today and all of a sudden the engine lost power and developed a ruff idle . It also seemed to be running on very few cylinders . It was working fine on the highway but once I got close to home , it began the loss of power and ruff idle in city traffic . Would a gas cap not being tight enough create this issue ? Also could it be the fuel filter ? It has a half filled gas tank and car always gets Shell 91 octane Ethanol free gas .



Thanks

Mike

[secondchance]

Originally Posted by Tripler

Hey guys/gals . Was driving the 1995 Z today and all of a sudden the engine lost power and developed a ruff idle . It also seemed to be running on very few cylinders . It was working fine on the highway but once I got close to home , it began the loss of power and ruff idle in city traffic . Would a gas cap not being tight enough create this issue ? Also could it be the fuel filter ? It has a half filled gas tank and car always gets Shell 91 octane Ethanol free gas .



Thanks

Mike

Hi Mike!

Did it backfire? First, I would check MAP sensor hose between the MAP sensor and the back of the plenum.
Loose gas cap wouldn’t cause symptoms you are seeing.

[dredgeguy]

Hi Mike, sounds like a problem I had in the past. One of the fuel pump hoses was loose and just hanging. The fix was new hose clamps. Good luck and keep us posted.

[Tripler]

Hey . Thanks for quick responses . I will give those tips a look tomorrow . Thanks 😊
Mike

[Tripler]

Originally Posted by secondchance

Hi Mike!

Did it backfire? First, I would check MAP sensor hose between the MAP sensor and the back of the plenum.
Loose gas cap wouldn’t cause symptoms you are seeing.

Actually it did backfire once .

Thanks for the tip .

[Tripler]

Originally Posted by dredgeguy

Hi Mike, sounds like a problem I had in the past. One of the fuel pump hoses was loose and just hanging. The fix was new hose clamps. Good luck and keep us posted.

Hey Charlie ! Hows things . Finally got warm weather up here so busy tuning my motor bikes ( I have 3 , 2 plated and one for track only ) and of course getting the Z and the 6 out once a week at least . I will be looking at the car this morning and will let you know what I find .



Mike

[Tripler]

Morning. A small hard black hose was not attached to a softer rubber 90 elbow. Is that the MAP Sensor ? . I reconnected it but still runs a bit ruff . Do I need to take it for a drive to reset everything ? Should I be looking for anything else ?
Mike

[secondchance]

Originally Posted by Tripler

Morning. A small hard black hose was not attached to a softer rubber 90 elbow. Is that the MAP Sensor ? . I reconnected it but still runs a bit ruff . Do I need to take it for a drive to reset everything ? Should I be looking for anything else ?
Mike

A small hard black hose was not attached to a softer rubber 90 elbow. Is that the MAP Sensor ?

Was this hose between the back of the plenum to underside of MAP sensor? MAP sensor is under an aluminum trim behind the plenum. Once reconnected, all should return to normal. If not, I suspect something else blew off under the plenum on top of MAP sensor hose when it backfired.

[dredgeguy]

Hi Mike, all well here. Sitting in Dhaka, Bangladesh now until the end of the month. Hope you track down the problem. When my issue started, engine felt like it was going to stall and that is when we found one of the fuel pumps disconnected. Keep us posted.

[Mystic ZR-1]

Dhaka Bangladesh!
Damn!!!
Charlie, I know I’ve said it before, but,
you get to go to the places us mere mortals can
only dream about!!!