Head Gasket

cre · 02-19-2010, 07:35 AM

Techron's about the best cleaner you can run through the injectors. For a better clean you really just need to send them in for servicing... the screens should be replaced and the injectors utrasonically cleaned. Generally, you'll pay anywhere from $10 to $20 each and that includes replacing screens, ultrasonic cleaning, testing for leaking and flow testing (so you know if you've got a bad apple in there somewhere).

I would not try brake cleaner in them... nor any other flammable solvent, you have to supply electricity to the injector to open the pintle; apply for too long and you fry the coil; create a spark and you're going to be waiting for your hands to grow back.

It's definitely worth getting the valves lapped, valve stem seals replaced and shims replaced as needed for proper cam clearance while the head is off. Also have the head vacuum tested and inspected for any signs of cracking.

02-19-2010, 07:35 AM	#10
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Techron's about the best cleaner you can run through the injectors. For a better clean you really just need to send them in for servicing... the screens should be replaced and the injectors utrasonically cleaned. Generally, you'll pay anywhere from $10 to $20 each and that includes replacing screens, ultrasonic cleaning, testing for leaking and flow testing (so you know if you've got a bad apple in there somewhere). I would not try brake cleaner in them... nor any other flammable solvent, you have to supply electricity to the injector to open the pintle; apply for too long and you fry the coil; create a spark and you're going to be waiting for your hands to grow back. It's definitely worth getting the valves lapped, valve stem seals replaced and shims replaced as needed for proper cam clearance while the head is off. Also have the head vacuum tested and inspected for any signs of cracking. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Blown Head Gasket?	BillW	MKIII Supra	5	09-17-2010 02:06 AM
1989 Supra blown head gasket	rayk5799	Non-Generation Specific Questions	6	05-18-2009 10:51 AM
hks head gasket	suprabahamut	MKIII Supra	8	09-01-2007 04:28 AM
Head Gasket replacement questions.	DavidLeClair584	MKIII Supra	1	06-09-2007 09:17 PM
Buying a 87, head gasket questions	Gengus	MKIII Supra	1	04-14-2007 07:15 PM