[thuggins]

2001 1.8 sentra started over heating and running terrible. It also took forever to start, it would just turn over and over before eventually starting. Once it did start to run it would idle very rough and water/coolant would bubble back into reservoir and smelled like exhaust.
I pulled spark plugs and removed valve cover. looking into the spark plug holes i could see coolant in the two middle pistons.

I would assume it is hard to start because off all the liquid being blown into the spark plugs. All of the oil looked fine, it was not milky or anything.
Compression test was.. 130, 125, 110 135 and all held pressure it did not bleed out quickly.

Am i dealing with a head gasket problem or possibly some other gasket or issue.

Thanks.

 

[txspeccer]

Undoubtedly a headgasket issue. Very common on both the early QR25's and all QG18's.

 

[thuggins]

Gasket Sealant

is it worth trying some of the liquid type sealers like steel seal or blue devil?

 

[txspeccer]

IMO, you'd just be wasting money. Stop leak products aren't meant for bad leaks (which yours seems to be).

 

[JudoJohn]

i agree w/ txspeccer. the only fix is to take it apart and replace the HG.

 

[Lil-j]

Do it right once, head gasket.