Wondering what to do? 1998 S70 blown head gasket Topic is solved

Post by **wheelsup** » 22 Jul 2022, 10:27

Are blown hg's starting to become a thing as these cars age? Just curious.

Post by **Clemens** » 27 Jul 2022, 23:51

Maybe, but I don't think so. It is probably a mileage/age thing, but alot of people still have their original gaskets.

Post by **scot850** » 28 Jul 2022, 11:41

I still think there is a relationship between running P80's on regular gas, and in particular turbos where the engine bay is hotter. The lower octane makes the cylinders hotter and I believe the cause a greater chance of valve failure or head gasket.

Same with transmissions, particularly the 5 speed auto. Not changing the oil in them (a Volvo mistake but now recommended every 50,000 miles but still 'optional' which is stupid!) and surprisingly after 10-20 years they fail. I look on 5 speed auto trans like the move from mid-efficiency furnaces that run for many years with little servicing, and high efficiency that need an annual service to keep running. It is all about maintenance.

Neil.

rnelson1044 · Post by **rnelson1044** » 20 Aug 2022, 08:03

Update on "wondering what to do; blown head gasket."
Job all done; have fuel to spark plugs; have spark at plugs; cam sprocket timing marks line up correctly on timing belt cover, no fault codes, BUT no start. What have I missed?

Post by **Sveedy** » 20 Aug 2022, 08:23

Is it cranking over, or just plain dead... ?

rnelson1044 · Post by **rnelson1044** » 20 Aug 2022, 12:50

Sveedy, I have located and corrected the problem, thanks to Robert DIY on YouTube. I had re-assembled the cam sensor at the rear of the exhaust cam incorrectly. As many times as I have removed and replaced that thing over the years when having to replace a leaking cam seal, I had never reinstalled it incorrectly....until now! Anyway, once corrected, engine fired right up and all looks good.
Thanks for the comments.

Post by **scot850** » 20 Aug 2022, 16:02

That is great news!!

Neil.

rnelson1044 · Post by **rnelson1044** » 30 Aug 2022, 19:37

Update: head gasket replaced; head renewed; engine runs just great. The job was a pain in the b*** to complete but I'm glad I did it.

Post by **scot850** » 30 Aug 2022, 22:44

Thanks for the update and the great news! Well done!

Neil.

Oly850 · Post by **Oly850** » 01 Sep 2022, 16:21

I’d definitely fix it. Get a manual & the special tool (you can borrow @ auto parts store) to take off the head clamshell and you’re in business. It’s not an easy job, but if you have a dry garage you can fix it, maybe with some assistance.

Wondering what to do? 1998 S70 blown head gasket Topic is solved

Re: Wondering what to do? 1998 S70 blown head gasket