Saturn 96 sohc...leak of preston from the tank cap
I have a satun sl 96 with 1.9l sohc, i rebuilt the engine ( head rebuilt, new ring, new bearing, new gasket,new thermostat). Thermostat open at 94 degrees, and fan start at 108degrees but,,,juste befor the fan goes on, a leak of preston comes out the cap of the tank, so i change the cap,same problem, i switch radiator from a used one...same result...only thing i can see will be to change the tank.....another idea????
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The SL is the small 4 door
The SC is the 2 door Sport Coupe
The numbers refer to the engine. The all have a 1.9 liter. "1" is a Single Over Head Cam, 8th VIN will be an "8". "2" is the Dual Over Head Cam, 8th VIN will be a "7"
So a Saturn SL2 with be a 4 door with a DOHC 1.9 liter. SL1 will be a 4 door with a SOHC 1.9 liter. SC2 will be a 2 door with a 1.9 liter DOHC. SC1 will be a 2 door with a 1.9 liter SOHC.
If you are replacing a DOHC 1998 engine with another DOHC 1998 engine yes it will work. Saturn only made two engines from 91-99 and they all had the same block, difference some were SOHC and others were DOHC. The number "1" after SL or SC or SW means SOHC while the number "2" after SC or SL or SW means a DOHC.
Note if one is an auto and the other manual you are going to have to swap the flywheel/ring gear stuff over.
First, you are using Regular Unleaded Gasoline, right? If so, you either have a Rod knocking (bad rod bearings), worn valves/seals/springs, faulty engine mount, etc. I would first inspect the Engine mounts. If the ticking is coming from inside the Engine, you will need to get the Cylinder Head rebuilt, or the block rebuilt (crankshaft, rods, bearings, pistons, etc.) If the Engine mounts are fine, you will probably need to get the engine rebuilt.
If sounds really loud and the sensor is showing that code, check the exhaust. They will put it up on a lift for free to see the problem of a "loud noisy sounds" maybe even find out what is wrong with it. Just a shot for a little free help. Might be exhaust since it is so loud. Could be exhaust manifold or something stuck under the car.
requires pulling the head off and replacing the gasket. not an owner serviceable repair unless you have a lot of tools. while you are at it you will want to do the timing chain as well. might make more sense to buy a lower mileage compatible engine out of a junkyard. most saturn engines from 96-98 will fit in there, you must make sure that if yours is a SL2, meaning DOHC your donor vehicle must have the DOHC as well as the transmissions are different on the SOHC cars. SC1 and SL1 and SW1 have the same engines and SW2, SL2 and SC2 are the same. something i learned a long time ago was that if you have a valve job done on the head before you put it back together, the piston rings will go bad within a few weeks. good luck
Get a remanufactured head. They've been tested and rebuilt. Many owners from several online forums had had good luck with a company that has an eBay store. I think they're called clearwater heads or something like that.
Also its not just 96-99 SOHC's, its 1991-2002 SOHC's. I'd personally swap in a DOHC.