Misfire at idle. Need help.

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89s13240
Posts: 2
Joined: Sun Jul 14, 2019 2:14 pm
Car: 1989 Nissan 240sx s13 ka24e

Misfire at idle. Need help.

Postby 89s13240 » Thu Sep 05, 2019 8:26 am

I have already researched a ton of threads about this and haven’t found a for sure solution.

89 240sx with a KA24e single cam.
Parts that are new:
Injectors,fuel pump,fuel filter,plugs,wires,distributor,ignition coil,IACV,CTS,MAF SENSOR and sub harness with new ground,02 sensor,cat converter,TPS,oil pump,timing chain,head gasket,water pump,thermostat,alternator.

Literally any part that could be replaced is new. The only thing I haven’t replaced is the FPR. TIMING is 100% correct at 15 degrees BTDC. Runs and drives but has a stumble misfire at idle and acceleration. Loss in power. Seems to go away the higher the RPM but is still present. Compression test all cylinders at 150. All vacuum lines are connected. No codes on ECU.

Any info would be helpful.


amc49
Posts: 1175
Joined: Mon Jun 19, 2017 7:24 pm
Car: '11 Versa
'17 Altima

Re: Misfire at idle. Need help.

Postby amc49 » Tue Sep 10, 2019 1:06 pm

Vacuum leaks are not parts that can be changed. Idle misfire is either that or an ignition issue most commonly.


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