herrajdm

Hey, I just bought a non running 5 spd sc300 ive gottin it to crank, not run. it gets spark to the cylinders but wont run. I did the 12v fuel mod and it seemed like it kinda wanted to run.... but it dident... so im in need of help from you guys. please help lol

durtysc300

Check your maf and dizzy make sure its timed right.

herrajdm

Idk but the engine may not be timed right and it must not be getting fuel. I got it to run for the longest yesterday by spraying starter fluid in the intake.... and when I did I heard a like metal on metal tap sound, like a few taps in a row then nothing then those sounds again.

durtysc300

Okay for an engine to run we need air fuel and spark. so you need to check all three things. also check the timing on the engine these are i believe interference engines so if its timed wrong..kaboom! bye valves! it sounds like if you are spraying ether into the intake it and tries to run you probably have a fuel issue. check the injectors and the fuel lines for any clogging aswell.

GS4_Fiend

iTrader: (22)

Do the basics. Check you got fuel pressure.

herrajdm

I don't have fuel pressure. Should I get a whole new fuel pump?

lmfod

Definitely possible but just check the fuel filter first
to be sure its not that. Take it off and try to blow through it to see if its clogged.

herrajdm

Went ahead and bought a denso fuel pump. Gonna check the filter to to marrow ill tell y'all how it goes.

SC400DAVE

For sure check the timing belt is on right if the filter and pump don't do the trick. Some how the belt jumped a tooth after hitting a speed bump to hard on my wife's car and same symptoms you got. The mechanics were baffled for days trying to figure it out.

herrajdm

Could someone point me to a thread on how to replace the fuel pump?

herrajdm

It looks a bunch of rust or like brown stuff is in the tank

SC400DAVE

Rear seat removal and you can see the access panel for fuel pump behind the rear seat back. Also Fuel Pump ECU info!

https://www.clublexus.com/forums/per...tures-faq.html

Fuel Pump removal instructions from Lexus

http://postimage.org/image/5bhux16pn/

Here is one for the fuel filter. Sounds like you better replace that too:

http://planetsoarer.com/fuelfilter/Fuel_Filter.htm

You might want to clean the sender for the fuel level too.

http://soarer.ace.net.au/v8_fuel_guage.html


If you want to replace the fuel tank, check this out. DO NOT USE FOR FUEL PUMP REPLACEMENT


Notice when he finally gets the tank out he shows you the silver fuel pump access panel that is behind the back seat!

Good Luck and let us know what happens.

herrajdm

I got a new gas tank. its an sc400 one. Are they slightly diffrent? the sc300 gas tank and the sc400 tank?

SC400DAVE

same tank. don't worry. what was that fuel filter looking like?

herrajdm

not that great. getting a new one :/ i compared the tanks side by side and it looks like some of the lines inside were diffrent