SPONSORED LINKS

1985 Mazda 626 water spraying out of top of rad

Tiny
MTLOVE1
  • MEMBER
  • 1985 MAZDA 626
Engine Cooling problem
1985 Mazda 626 4 cyl Four Wheel Drive Manual

i am guessing at the year of the car. It is an oval track stock car we just got for free. It had a rotten hose from the block to the heater core so I removed both heater core hoses and just by passed the heater core totally. So when I start the car now the coolant is super pressurized and sprays out from the rad cap. If you take the cap off it is like a fountain shooting out. Do I have a blown head gasket and the exhaust is getting into the cooling system?By passing the heater core shouldn't do this. Any ideas. Thanks
SPONSORED LINKS
Sunday, November 8th, 2009 AT 6:22 PM

3 Replies

Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
If the coolant spray out the radiator cap as engine start almost for sure suspect at least a blown headgasket
Was this
answer
helpful?
Yes
No
Sunday, November 8th, 2009 AT 7:36 PM
Tiny
MTLOVE1
  • MEMBER
  • 2 POSTS
Thanks for the reply. So if on start up (cold engine) the coolant just starts gushing out of the rad. You are saying that is a head gasket?So the exhaust or compression must be forcing the water out. Could it be ANY other thing besides a totally blocked radiator?
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Sunday, November 8th, 2009 AT 10:28 PM
Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
Part stores should have a headgasket test kit
its a fluid tube that change color if exhaust gases present in the coolant system
totally blocked radiator may be the cause of the head gasket failure but I dont think its the reason that forcing the fluid out
pull spark plugs and check if wet
Was this
answer
helpful?
Yes
No
Monday, November 9th, 2009 AT 5:58 AM

Please login or register to post a reply.

Related Radiator Cap Content

Radiator Cap Replacement
VIDEO
Radiator Cap Replacement
Instructional repair video
VIEW MORE

Sponsored links