Nissan exalta serious problem, please help

[toby_30]

hi, can somebody help me about what's been happening to my nissan exalta 2000.

This is quite a long story but please bear with me.

Nkapagpa-overhaul nako ng radiator kc there was one day when i was refilling it with water (routine ko before leaving), may umangat na oil. so i got the oil cooler of the radiator checked,no problem naman.

But then,kinabukasan when i used it,after 10km,i stopped dahil mag-ooverheat, when i got to refill it again, i also checked the engine oil, pagkakita ko, pink na ung kulay. (red ung engine oil ko) so i concluded na nahaluan ng water. so i got the car towed back to our house. then i called my mechanic top overhaul na rw. Ginawa na un plus nakapagmachine shop na (refaced the valves and the cylinder head,replaced valve seals and head gasket with original nissan parts), ung engine block dko napa-check pa.

AFter it got fixed, sabi keep it first 40-60kph para nde mabigla. I obeyed. Then for total 5days,i tallied that i drove the car for just 50km. On the 6th day when i was about to bring it again, i saw na nman na iba color ng engine oil (nung nagpa-change oil ako after top overhaul, i used regular engine oil muna: the usual color yellow). Dahil dun, i went to a car shop to have the oil drained,mga 3 flushing. I got the cover to be cleaned up and nakita ko na nag-accumulate ung milky white substance sa tapat ng timing chain. Tapos, nung okay na ulit, i drove it to test.

Umabot ako ng 70kph (dstance covered from car shop *makro cainta to lrt purple lane: 7km na) then all is well until i got to kamias (dstance covered 11km), biglang tumataas temp ulit, so i pulled over and have it checked again, pag-open na nman ng radiator cap and when we're refilling it, color brown naman na oil ang nag-surface..

I got it towed back to our house at dko na alam ano pang gagawin ko. I mean where will i start again?

Please advise. Thank you.

[ghosthunter]

It means the overhaul didn't fix your water leak.

I think there is no other choice but to give your engine another check. Maybe even to check if the block or cylinder head warped either due to heat or improper torquing.

[speed unlimited]

As what you said check also your engine block for damage and top overhaul did not fix the problem bring it back to your mechanic .

[vinj]

The only way to properly check the engine block is through a hydrotester (or something like that). We used to go to bring the blocks to Precision along Roces in Q.C. for that.

Otherwise, better to find a surplus block.

[njgarin]

Sir check your water pump. Sabi ng mga kaofficemates ko dito sa nissan its possible na yun ang may leak according to the model ng sentra na binigay mo. ang exchange kasi ng fluid na nangyari sayo is from engine to radiator and back e. the highest possible place na mangyari ang fluid exchange na to is sa water pump.

Ninyo
Team Nissan.

[toby_30]

Hi Ninyo,

Thank you so much for that info. Actually a trusted mechanic mentioned that one already to us, and something to do with timing chain cover. We were so focused of the head/block problem so we didnt even touched-base with that (water pump) comment.

We'll probably give that one a try, coz the thing is after the last drive we had with the car (the 11 km i mentioned in my original post), we just parked the car in the garage for weeks until we save money and have time to deal with the prob again. Last week we asked for another mechanic to check it, surprisingly we drove with it for like more than 12 km without any problem, oil color is good, no overheating, good acceleration, one-click start, etc. Then the next day we drove it around the village again, roughly 3km, still no problem. Then yesterday we checked the oil and its starting to show signs of turning into a milky substance. So we stopped test driving it again.

Checking the waterpump - i hope will solve the problem coz really the car was running fantastic after the second overhaul except for that oil turning milky.

Worst part, this is my first car, bought it from a guy who swore on his life that the car wasnt flooded but only after 2 months of running, been to numerous mechanics all saying it was indeed flooded =( haay. But i know we'll get through it.. I hope!

Thanks guys for all your help and suggestions!

[dreamscape]

hi there,

i do have the same problem with my nissan exalta sta, but last saturday i had the cylinder head hydrotest, and the results was a disappointment, i have to replace the cylinder head. the machine shop said it had a leak. can anyone help me find a surplus one, i know that a new one would be very expensive and my funds are limited right now. hope to hear from you friends.

thanks,
dreamscape

[vinj]

hi there,

i do have the same problem with my nissan exalta sta, but last saturday i had the cylinder head hydrotest, and the results was a disappointment, i have to replace the cylinder head. the machine shop said it had a leak. can anyone help me find a surplus one, i know that a new one would be very expensive and my funds are limited right now. hope to hear from you friends.

thanks,
dreamscape

Try inquiring with the shops that do engine swaps, or in sites like Clubnissansentra or Sentraclub guys as those who may have done engine swaps may still have their engines or various parts still lying around.