A technician is performing a cylinder leakage test on an engine. The technician sees air bubbles in the radiator with the cap off. What is most likely the cause?
2006-08-08 22:13:14 · 10 answers · asked by harmony 1 in Cars & Transportation ➔ Maintenance & Repairs
hmmm depending on what the composition of the liquid is in the radiator and the temp. of the engine I'd say its normal. A Cylinder leak test has NOTHING to do with the cooling system, a Cylinder leak test is to see if the piston rings or valves are bad, causing oil to burn with the fuel. If someone is telling you that the bubbles in the radiator are a problem when they're testing cylinders...find a new mechanic. This person sounds like a scammer.
2006-08-08 22:24:48 · answer #1 · answered by TRKiev 2 · 4⤊ 2⤋
A blown head gasket is most likely the problem. If, after driving the vehicle, the cooling sysem pressurizes to the point that coolant is forced out of the coolant overflow, then it is almost positive that you hav a blown head gasket.
There is the possibility that you have a cracked or warped head, or a cracked block. like others have mentioned, but the most likely possibility is the gasket.
You would have most likely had to run the motor extremely hot for an extended period of time for it to warp a head.
For the block to be cracked, you would have probably had to add coolant while the motor was overheated and not running.
2006-08-09 02:19:36 · answer #2 · answered by justanoldguyfromky 2 · 0⤊ 0⤋
Well you could have 1 of several possible problems! A blown head gasket. I warped head! A cracked block or even a cracked head! Also possible crack in cylinder wall..all of these could allow possible air to cross over to a water jacket thus causing the air in the radiator....
2006-08-08 22:48:14 · answer #3 · answered by avenger105 1 · 0⤊ 0⤋
This is an easy one. you have a leaking head gasket. It seals the combustion chamber from the water jacket between the engine block and the heads. I would ask to see it for myself and if so you need the gasket repalced. I really don't think the mech. is scaming you.
2006-08-08 22:47:19 · answer #4 · answered by wzzrd 5 · 0⤊ 0⤋
Head gasket depending on the engine. Some have intake problems.
2006-08-08 23:16:21 · answer #5 · answered by kayef57 5 · 0⤊ 0⤋
For models 1990 and older the bubs dont matter untill you put the cap on and you can see through steel
2006-08-08 22:23:37 · answer #6 · answered by ricksmail99504 2 · 0⤊ 0⤋
Coincidence, or bad head gasket
2006-08-08 23:57:55 · answer #7 · answered by Anonymous · 0⤊ 0⤋
it may be a bad head or you may have trapped air in your system-if this the case it willneed the air bleed out of the system.
2006-08-08 22:40:14 · answer #8 · answered by skidmark 1 · 0⤊ 0⤋
"Backtr" hasn't a clue.
You've got a blown head gasket.
2006-08-09 00:00:06 · answer #9 · answered by Mr. KnowItAll 7 · 0⤊ 0⤋
most likely...Head gasket.
secondly.....cracked head
2006-08-09 02:19:14 · answer #10 · answered by Anonymous · 0⤊ 0⤋