Timing off 1 tooth

[bigbro6785]

I have had my car close to a year now and it hasnt ran right since i bought it and I have not been able to figure out why. I have changed the plugs, wires, fuel filter, and fixed all boost/vacuum leaks. Despite this the car still has a really rough idle, the vac pressure at idle is only 10hg, and the car just feels really really slow despite the mods i have (intake, uicp, 1g bov, N1 dp and exhaust, mbc @14psi). Well I finally decided to check the timing and i see that it is off by on tooth, which im assuming happened when the previous owner got the tbelt changed. My question is, will my timing being off 1 tooth cause my car to run this poorly? Any input will help. Thanks guys.

 

[dsm_racing]

Intake or exhaust cam. I accidentally got mine off one tooth on the intake cam once, which is about 20 degrees or so. It will certainly make your car down on power and run poorly. You certainly want to get that fixed.

 

[Cs4g63]

Having the timing off will definately make your car run like crap. Fix it and see how much nicer it runs.

 

[Xit40]

Being off one tooth will definitely cause it to run crappy. It probably sounds like you have cams on your car at idle....a little lope right? I messed up my timing like this before. One tooth equates to about 9 degrees if I remember correctly which is more than enough to cause it to run crappy with low vacuum. Thankfully nothing should be bent or anything like that. i would just retime it and see what happens. Do it soon though.

 

[Ajax]

OK very weird and dumb question then, so say you have a standalone ECU can you adjust it so it does not play a role or can you only add to the exsisting timing?

 

[dsm_racing]

which is about 20 degrees or so

One tooth equates to about 9 degrees if I remember correctly

Oops. How about 7.5 degrees? You were definitely closer. Maybe I had mine off two teeth. Definitely will run better in time, though.

OK very weird and dumb question then, so say you have a standalone ECU can you adjust it so it does not play a role or can you only add to the exsisting timing?

Stand alone ECU is controlling spark timing. Valve timing for the 4G63 is fixed, mechanical timing. ECU can't control that. I don't understand variable cam timing enough to comment on that. We don't have VTEC.

 

[silver bullit]

This car has boost it does not need vtec, besides vtec kills boost in the higher rpms. All the ecu will do is keep advancing timming until it detects knock and when it does it pulls timming.

DSM racing- vtec is simple if you know how is work it, and yes vtec has piston return springs, how do you think the piston return after oil pressure has locked the lobes together.