Burping cooling system
Thread Starter
5th Gear
Joined: Jun 2005
Posts: 5
Likes: 0
Burping cooling system
89 Vette, 48,000 miles , replaced starter side freeze plug last week, aded coolant to raditator, drive it, add coolant light comes on , done this about three times now goes on and off, have checked again this morning (cold engine) raditator full, noticed in one of the mauals about 92 and previous about burping the system with bleeder valves near the throttle body, did not see anything like this?
Thanks,
Todd
Thanks,
Todd
Le Mans Master
Joined: Aug 2003
Posts: 9,884
Likes: 3
From: Magnolia Mississippi
St. Jude '03-'04-'05-'06-'07
Yea, L98's require burping and reburping till you get it right.
Jack the front end up, open rad cap, start engine, let it warm up to op temp and term opens up, then have coolant mix ready, using the throttle linkage, rev and hold @ 2000 rpm's, you'll notice the level goes down, add coolant till up to neck level, hold the throttle @ 2k for a while to see if it goes back down, if so, add again, when finally you have to add no more, while still at 2k put the cap back on.
It took me 3 times before i finally got it burped completely. Then take it out for a drive and redo the process if necessary.
You might also check the rad cap, i finally had to get a new one.
Jack the front end up, open rad cap, start engine, let it warm up to op temp and term opens up, then have coolant mix ready, using the throttle linkage, rev and hold @ 2000 rpm's, you'll notice the level goes down, add coolant till up to neck level, hold the throttle @ 2k for a while to see if it goes back down, if so, add again, when finally you have to add no more, while still at 2k put the cap back on.
It took me 3 times before i finally got it burped completely. Then take it out for a drive and redo the process if necessary.
You might also check the rad cap, i finally had to get a new one.
Drifting
Joined: Jan 2002
Posts: 1,261
Likes: 4
From: Middle River MD
Originally Posted by vinnies87
Yea, L98's require burping and reburping till you get it right.
Jack the front end up, open rad cap, start engine, let it warm up to op temp and term opens up, then have coolant mix ready, using the throttle linkage, rev and hold @ 2000 rpm's, you'll notice the level goes down, add coolant till up to neck level, hold the throttle @ 2k for a while to see if it goes back down, if so, add again, when finally you have to add no more, while still at 2k put the cap back on.
It took me 3 times before i finally got it burped completely. Then take it out for a drive and redo the process if necessary.
You might also check the rad cap, i finally had to get a new one.
Jack the front end up, open rad cap, start engine, let it warm up to op temp and term opens up, then have coolant mix ready, using the throttle linkage, rev and hold @ 2000 rpm's, you'll notice the level goes down, add coolant till up to neck level, hold the throttle @ 2k for a while to see if it goes back down, if so, add again, when finally you have to add no more, while still at 2k put the cap back on.
It took me 3 times before i finally got it burped completely. Then take it out for a drive and redo the process if necessary.
You might also check the rad cap, i finally had to get a new one.
My thoughts exactly after doing the same thing...it takes a while to get all the air out.
