i set my ignition timing to 18 degree to get rid of bad hesitation in warm weather but now i think im hearing pinging. im not sure though as i dont really know what it sounded like before (i never payed attention).

i was riding close to a wall down the free way doing like 35 before speeing up and i hear this kind of odd sound when accelerating. but again i dont know if it is jus in my head (knowing that i juss advanced the time to 18) or what because i dont really kow what pinging sounds lilke.

from what i read however, 18 degree s is still within acceptable engine specs. i knwo. and of course i always use premium unleaded 93 octane from bp's or shell.

do you guy think my car is ok at 18 degrees or can it cause damage? im really paranoid now!

 

doubtful. but what's the year and model?

 

96 dx hatch butthe engine from what the original owner said was from a 98 gsr with approxamately 120k miiles.

do you know if an short ram intake could cause bad enoug heatsoak to cause hesitation after sitting idle for a littlw whiile on a hot day? and do the ecu retard timing if it senses hot temps under the hood?

 

the most obvious thing to do would be to retard the timing,and see if you still continue to hear the noise.
ive always been told that advancing the timing TOO MUCH can cause pinging...but i do not know what is too much..

 

Ign. timing is constantly being adjusted by the ECU/ECM, that is why you need to install a jumper on the check connector to short the circuit when setting the ign. timing, and it is set to 16 degrees BTDC +/- 2 degrees.

That puts 18 degrees on the outside edge of optimum.

Did you jump the connector when you set the timing, was the engine at running temp.? 94

 

hi yes the engine was at operating temps and i did jump the service connecter when i set it . so are you saying that 18 degree is still high even though i was at oper. temp and had the connecter jumped?

 

yea i know that verything i read it says not too advance it too much but noone ever says what is too much. i mean 14-18 (everything with in the three marks) should all technincally be fine for the engine as i have read that they are in spec just that 14 is lower end of spec and 18 is higher end of specs. but again no thread ive read has anyone ever said tat it was technically OK to be at 18 or not.

 

that engine was designed to run with a knock sensor. the ecm will retard timing when a knock is detected. is the knock sensor enabled?

 

"That puts 18 degrees on the outside edge of optimum" sorry should have added, yes that is OK.

Again the, ECU/ECM will adjust timing to where it needs to be.

Also, what el crapitan asks, is knock sensor wired? 94

 

hmmm i honostly do not know. but i will assume that it is since i am not getting a code for it when i jump the connecter...

do you know if very hard, stiff motor mount can cause al sorts of noises? in addition to the loud vibrating it just seem like there is a lot of added noises not. i got all 5 of them/. do they just make things more noisier under the hood? i had an earlier theory that the ks could be detecting the knocks and vibrations caused by the mounts leading to retarding the timing causing my sluggishness.. but someone in another thread siad that wasnt likely...

 

what ecu is in there?

 

"Harder/stiffer" motor mounts will make things "louder", more engine vibration will be transferred to the chassis, you will "hear" more and "feel" more, so yes, things will be "noisier".

As for it retarding the timing, I do not think so, unless the distributor assembly was loose enough to turn. 94

 

i think he was wondering if the knock sensor would be triggered by the vibration of the stiffer mounts.
i have heard of cases where someone was travelling over rough terrain and the knock sensor would trigger. that's why it's important to know if it is even enabled. that way you can just disconnect it and see if the problem persists

 

yes i was actually curious about the ks being triggered by bad vibs. and i think the ecu is just the stock gsr. how do i tell the difference??

let me ask you do you think that 18 deg ign. timing is too much for a stock gsr engine? could that cause a knock even though i am useing 93 octane? and what gas stations use the best gas?