# coolant on engine after boosting

**URL:** <https://forums.speedlife.net/t/coolant-on-engine-after-boosting/142455>\
**Category:** Canada Nissan Automotive\
**Created:** [May 8, 2006, 5:48pm UTC](https://forums.speedlife.net/t/coolant-on-engine-after-boosting/142455 "2006-05-08T17:48:20Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![copper](https://avatars.discourse-cdn.com/v4/letter/c/dc4da7/32.png) [@copper](https://forums.speedlife.net/u/copper)\
**Post date:** [May 8, 2006, 5:48pm UTC](https://forums.speedlife.net/t/coolant-on-engine-after-boosting/142455/1 "2006-05-08T17:48:20Z")

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I have been having a problem with my rad lately. After I boost through 2-4 gears at WOT I can smell coolant from under the hood. When I inspect it to see what the problem is I see coolant on the alternator and belts. It seems the coolant is coming out of the small round pie shaped (that’s all I could think of) hard plasitic bit just under the rad cap or the rad cap itself. It doesn’t happen any other time…just when I am boosting hard. Any ideas?? Thanks

FYI- no white smoke under boost and the oil is normal colour. The coolant was flushed and the t-stat replaced just over a month ago. All work done by Nissan.

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**Author:** ![1mns13](https://avatars.discourse-cdn.com/v4/letter/1/8491ac/32.png) [@1mns13](https://forums.speedlife.net/u/1mns13)\
**Post date:** [May 8, 2006, 9:15pm UTC](https://forums.speedlife.net/t/coolant-on-engine-after-boosting/142455/2 "2006-05-08T21:15:19Z")

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> [@copper](#):
>
> I have been having a problem with my rad lately. After I boost through 2-4 gears at WOT I can smell coolant from under the hood. When I inspect it to see what the problem is I see coolant on the alternator and belts. It seems the coolant is coming out of the small round pie shaped (that’s all I could think of) hard plasitic bit just under the rad cap or the rad cap itself. It doesn’t happen any other time…just when I am boosting hard. Any ideas?? Thanks
> 
> FYI- no white smoke under boost and the oil is normal colour. The coolant was flushed and the t-stat replaced just over a month ago. All work done by Nissan.

Changing teh rad cap would probably been a good thing to do at that time as well. Check for corrosion on the tank, on the cap sealing surface.

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**Author:** ![copper](https://avatars.discourse-cdn.com/v4/letter/c/dc4da7/32.png) [@copper](https://forums.speedlife.net/u/copper)\
**Post date:** [May 8, 2006, 9:23pm UTC](https://forums.speedlife.net/t/coolant-on-engine-after-boosting/142455/3 "2006-05-08T21:23:31Z")

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yeah I am going to buy a new cap once I have some time off work. I am hoping that it will just be that!

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**Author:** ![jdms13rhd](https://avatars.discourse-cdn.com/v4/letter/j/f05b48/32.png) [@jdms13rhd](https://forums.speedlife.net/u/jdms13rhd)\
**Post date:** [May 10, 2006, 5:12am UTC](https://forums.speedlife.net/t/coolant-on-engine-after-boosting/142455/4 "2006-05-10T05:12:56Z")

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maby your water pump seal is gone. Look from under your car and you will see a little hole on your water pump. If it is leaking from there you just need a new water pump. If not is want to cheak the coolent a little better. I have seen head gaskets blown that once on boost it can blow coolent through places like that seal or rad cap or overflow thingie. But ya I doubt that. Prob somthing simple.