IGNITION RAAATTTTLINGGGGG !!!!!!

quintessentiallyenigmatic · Postby **quintessentiallyenigmatic** » February 21st, 2008, 1:50 pm

Help anyone......i have a 4g92 engine ignition started rattling only climbing hills.. now all the time.....
what causes it & HOW TO MAKE IT STOP..

RBphoto · Postby **RBphoto** » February 21st, 2008, 2:00 pm

Describe sound a lil better so we can figure out what it is. Ignition noise you say?

Check this series of webpages if they can help pinpoint the noise and better describe it to us.

http://remanufactured-engines.com/page4.htm

Welcome to the tech forums.

quintessentiallyenigmatic · Postby **quintessentiallyenigmatic** » February 21st, 2008, 2:33 pm

Thanks...looking at it

Big Z · Postby **Big Z** » February 21st, 2008, 2:35 pm

Sounds like your engine is pinging..
Do a FULL service... injectors, throttle body.
Report in after.

ryansouthman · Postby **ryansouthman** » February 21st, 2008, 2:50 pm

Gas Octane ..................common problem with toyotas, never run super in a toyota EFI engine and the GDI engines

X_Factor · Postby **X_Factor** » February 21st, 2008, 5:22 pm

insufficient fuel pressure/ bad fuel filter may cause u to lean out and get the pinging not so?

i think this is happening to me..cause i hear my fuel pump singing ever soo often soo im wondering if its dying slowly but surely
but i get mine at around 4500-6000rpm
and about 3000 upwards wit a/c on

turbohead · Postby **turbohead** » February 21st, 2008, 5:39 pm

go premium yo...

RA40-GTE · Postby **RA40-GTE** » February 21st, 2008, 6:29 pm

ryansouthman wrote:Gas Octane ..................common problem with toyotas, never run super in a toyota EFI engine and the GDI engines

u hit the nail on the head there...very common with the 4g15 as well.

Retarding the timing very little sometimes help when octane boosters dont.

Strugglerzinc · Postby **Strugglerzinc** » February 21st, 2008, 8:30 pm

needs premium gas, vacuum leak maybe?

quintessentiallyenigmatic · Postby **quintessentiallyenigmatic** » February 21st, 2008, 9:44 pm

thanks guys running premium now...still had 1/4 tank with super....getting less noise but still present....hoping another fill up might fully cure.....ny thoughts on using engine restore to help with noise.......recently serviced/tune up injectors /throttle body/ oil etc/ even changed fuel pump/coil packs/plug wires though not plugs/mech said it was fine.......can i tell if a vaccum leak exists or need to go to someone special....as u can see after that service i'm running a little lean in the pockets....also what oil to use 181186 miles

Postby **Hook** » February 21st, 2008, 9:52 pm

easiest way to find a vacuum leak is to get a can of carb cleaner and spray on the vacuum lines when the engine is running at normal operating temperature

spray one line at a time and listen out for changes in the tone/beat of the engine...if u get a change, thas the suspect line...inspect and secure or replace if necessary