95' toyota 4 runner, just had intake gasket replaced. That seemed to be the source of the leak on the back of the engine. Drive for 2 days and it is leaking again but not from the same spot. Can't find out where it is coming from. Is there a hose that runs across the back of the engine somewhere that could be the culprit?

does the vehicle crank? if it does please remove the old air filter and leave the air filter intake box open, unplg the maf sensor, try and let me know.


saif

Check for a faulty rocker cover gasket or loose bolts holding it on.

Sounds like the intake manifold gasket. Easy test. Take engine cleaner, or brake cleaner and with truck running, spray directly onto the INTAKE manifold gasket where it bolts onto the engine. If you hear ANY difference in the idle, up or down, gasket is shot. Very common. If idle doesn't change, spray all the vacuum hoses you can, listening for any change in idle. Let me know how you make out, if it's not that, I can suggest more things, but if I were a betting man, I'd bet that the gasket is the problem.Cheers from Nova Scotia

only other two option are the coils and the injectors'

With engine running unplg one coil at a time feling for the one that does NOT stumble the engine. The one that doesnt is the dead cylinder. Then rotate the coil to another cylinder. If the misfire follows it to coil then the coil is bad. If it doesnt then the injector is bad or clogged. Before replaceing it spray some water on the intake gasket to verify you do not have a leak .near that misfiring cylinder. If you do then the gasket is the problem. You should feel the engine stumble is its leaking

There is a heater core bypass pipe that runs from the block (under the manifold) to the bacl of theengine where you will see a flat rectangular "sheet metal" thing with a pipe coming out of it. The a rubber hose connects. You need to pull the top air plenums and intake to get to it. The p[ipe flange bolts to the block with silicone rtv as a sealant.

Head gasket gone between 1 and 2 cylinder most likely.

you need to pull heads off. you have blown head gaskets or warpped heads from overheating or both.

Check the vacuum line from the brake booster to the intake for leaks or missing/ loose clamps. If it's all intact, look around the booster (big bowl looking thing on the firewall) for leaking brake fluid. If the booster is leaking, it will have to be replaced.

I have a 95 toyota four runner and it keeps running hot , where is the thermostat.

you might just have clogged fuel filter