better explanation on cars problems and logger results

[larrys91talon]

well i got my logger hooked up today and im hitting 43 counts at wot under any boost and retarding my timing over 20 degrees, if i shift slow and keep it in vac or 0 boost i get 0 counts.

my knock sensor is kinda gummy were it touches the block so its probubly bad.i unpluged the knock sensor(i no its bad)to only get the -9 degree timing and now if i push the throttle past even a 1/4(if that even)it just sputters and doesnt let me accelerate at all(if any its like a geo metro) and backfires sometimes when shifting gears.compression is 160 across the board.

the tps is good,with the car off and gas pedal pushed to wot the tps on the logger reads 98.8%

i dont no its weard my o2s on the afc(blue wire mod from vfaqs)and the knock sensor unplugged its reading .1x at wot but the loggers reading .8x at wot,this only happened after the knock sensor was unplugged.

i've tryed all boost levels from stock 9psi to 15psi and even up to 20psi and it does the same thing(geo metro accel.) under any amount. my base timing is at +5 degrees the plugs are new ngk 6's and the wires are new oem ones.havent checked the coil pack or boost leak test yet cause i need a compressor the bike pumps and cheap walmart 12v air compressors didnt show any boost but felt air going threw the tubes.i'll probubly just go threw the tubing one by one(boost tester on one end and 1/2 in. cap clamped on other)and try that cheap 12v compressor like that.

 

[KDub]

Sounds like you're running rich and getting phantom knock. You need to get it tuned correctly. I know a great tuner in Chandler that can give you a hand. Let me know if you want more info on him. And the knock sensor doesn't do any good unplugged.

 

[laserspeeddemon]

Do you have valve tap?

 

[larrys91talon]

you could here somthing tapping in the motor in 3rd gear at wot and 15psi i was told its detonation to let off the gas right when i hear it or a full pull could blow the motor.it starts up runs smooth(no unusual noises) and will run smooth till i try to boost even at 1 pound the logger starts to read the -9 counts. it was running better when it was yankin it 20+ degrees.

 

[laserspeeddemon]

So you hear nothing at idle?

 

[larrys91talon]

at first start you can hear a little lifter tick but it goes away when the motor warms up.

wow boost leak tested it yesterday and the tbody elbo gasket,tbody to intake gasket and biss was leaking so bad i could only get 10psi into the system then it would leak out in 5sec max,so fixed that and about to go for a drive i'll keep you posted.

 

[larrys91talon]

just got back from a run car ran like crap still, wasnt knocking under wot but was showing 20ish to 30ish counts at parshal throttle(only while letting off the gas) so more leak tests today i guess cause im stuck dont no what else to do.

with tps at 98.8% i was getting the no knock but at like 5.7% tps i was hitting all around numbers.


ok it has good get off from 1k to 3k from 3krpm to 5k it bogges down then from 5k to 7k it flyes, throws me back in my seat. i cant figure out why that mid. range is so slow.any suggestions?

 

[larrys91talon]

my fpr: just looked at vfaqs also and they said at idle or under vac. my fuel pressure should be at 27ish and that should make it around the 36.3 mark at 0psi. so at idle right now i have it at 28psi(was at 40psi under vac.) is this right?but now the vac. guage is fluttering between 10vac. and 14vac. at idle.

got carb. cleaner and sprayed every vac. line i could reach and nothing no change in idle or anything.it didnt flutter at 1500rpm but now that im back to 800rpm it flutters.when i tap the gas and let off it goes to 22vac. steady for a sec then when the idle goes all the way to the 780 800rpm range it flutters.

my compression is 160 across all four cylinders.

could the whole fpr situation be apart of the bogging in mid rpm?

 

[viprez586]

Search phantom knock.
Probably should replace your knock sensor with an OEM one too.

Some things i have done to battle phantom knock:
Teflon tape around the threads.
Teflon washer.
JB weld hole on the knock sensor.
Race gas.
Individual sensor ground.

Just some things to get you started.