Getting fuel in radiator

Tiny
FRANCIS ZANGER
  • MEMBER
  • 2009 SAAB 9-7X
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 13,000 MILES
I am getting fuel in radiator and radiator is not circulation. I checked cylinder pressure one is 160 and the rest 180. When I start the engine and look in the radiator I see a air bubble then few seconds later another one and another. The motor seems to be running smooth other wise. It should be 130,000 miles.
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Friday, December 18th, 2020 AT 4:18 PM

5 Replies

Tiny
KASEKENNY1
  • EXPERT
Couple questions. How do you know if it fuel in the radiator? The reason is, if you are getting raw fuel in the radiator then I suspect someone put it in there. It would not be coming through the head gasket as the fuel is sprayed into the cylinder as a fine mist so if there was enough fuel in the cylinder to find it in the coolant through the head gasket then I suspect the engine would not run.

The fact that you have good compression, I suspect the head gasket is okay. So we can confirm this by following this guide:

https://www.2carpros.com/articles/head-gasket-blown-test

Then if this is not a head gasket issue, can you get a picture of what you are seeing in the coolant and we can try and identify it?

As for the bubbles, that is not uncommon to see some bubbles as long as there is no overheating and your head gasket tests ok as show above in the guide. So let's run through that guide and go from there. Thanks
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Friday, December 18th, 2020 AT 6:23 PM
Tiny
FRANCIS ZANGER
  • MEMBER
I am sorry I should have explained it better; it is my son's car and his friend did one of those test where you suck up some of the antifreeze out of the radiator and mix it the color changed and says there is exhaust gases in the radiator. So he said bad head or gasket. Original problem was imminent heat a little white smoke and bubbles in the radiator. He thought bad head or gasket put in Blue Devil for gasket and change thermostat, heat is the same air bubbles in the radiator cylinder check was good. We are stumped. Any help would be greatly appreciated, lol. Thank you and have a blessed day.
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Saturday, December 19th, 2020 AT 8:44 AM
Tiny
KASEKENNY1
  • EXPERT
That makes perfect sense now. Thank you. So you rechecked the head gasket after the blue devil and it is not leaking any longer but you have air bubbles and the heat still isn't working?

If that is the case, I suspect you still have a head gasket issue. Here is a guide that gives a couple ways of checking it. Also, I would suggest getting the engine hot and then doing another hydrocarbons test because a lot of times it will not present itself unless it is hot. This still sounds like a head gasket so we need to double check.

https://www.2carpros.com/articles/head-gasket-blown-test
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Saturday, December 19th, 2020 AT 7:57 PM
Tiny
FRANCIS ZANGER
  • MEMBER
Thank you. We are going to warm it up tomorrow and either recheck pressure or get a camera and check for fluid in cylinders or maybe both, lol. Thank you for the help. I will keep you informed. Have a blessed night.
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Saturday, December 19th, 2020 AT 10:25 PM
Tiny
KASEKENNY1
  • EXPERT
That is great. Thanks for the update. You as well. Thanks
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Sunday, December 20th, 2020 AT 3:56 PM

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