geoduke

I just swapped out the timing belt and water pump and want to test to make sure everything went in right without having to take parts back off if I need to get back in the engine.

If I haven't put back the radiator, fan belt, PS belt, or any hoses that connect to the radiator, should I expect the engine to run at all?

So far I've had no luck in getting it to run and don't know if I did something wrong in the timing belt install or if I just won't run without those additional parts.

4x4climber

just double check your work and throw it all together. if it spins freely you are most likely good. do not run a motor without coolant in it. put it all back together. if you have a problem then and cant fire it up we are here to help. and it is probably gonna be something dumb and simple.

blake.nemitz

it should run, do you have all the wires plugged in, how about the afm? it should fire unless you messed up your timing.

blake.nemitz

like 4x4 said about running with no coolant, i wouldnt do it except to hear it run and shut her down right away.

geoduke

Yeah I'm not planning on running it for more than a couple of seconds. I didn't know if there were any pressure related issues that would cause it to not keep turning over. I don't think I took off any air hoses in the process either.

I can get by without any belts either right? Except maybe the alternator.

xxxtreme22r

it's gonna run odd without coolant in it because the temp sensor won't be covered in coolant. So it's a waste of time anyway, Double check all the timing marks before you put the cover back on. (all three marks lining up. If those are lined up the only thing that might prevent you from starting is the distrubtor being off a tooth or two.

Marc

You can run it fine without coolant hoses or belts.
Don't need the alternator belt.
Don't run it long.

rattlewagon

http://www.youtube.com/watch?v=Hgx6ouqF22Y

xxxtreme22r

well, now that's interesting. I guess a veeze is a little more forgiving as far as the coolant temp sensor goes.

Numbchux

running without coolant won't hurt anything as long as it doesn't get hot. The coolant doesn't lubricate anything. It will warm up unevenly without coolant being pumped through it, which isn't ideal. but as long as you don't run it for more than a minute or so, you'll be fine.

I do this on all of my major projects (Including the 22RE in my 4runner). Give it a test-fire before buttoning everything up. Can potentially save a ton of time if something's off.



This is absolutely false. The temp sensor will still read that the engine is not up to temperature, and the ECU will adjust the enrichment values accordingly. And once the engine comes up to temperature, heat will transfer from the block to the sensor through the body, so it will still be fairly accurate (ever run out of coolant? the temp gauge still pegs to hot).

1990yota-pickup

if your that worried run some flexible hoses from bottom lower hose to top upper hose..and just fill it with water.. u could run it for a good 10 minutes or so, if you need to check for leaks, and operation...

xxxtreme22r

false? Me and 92 Toy knows what happens to a 22re when the coolant is low and.or has a bubble that hits the coolant temp sensor. Engine practically falls on its face till the bubble works out or coolant is added.

Numbchux

When the sensor doesn't have coolant around it, it tends to read cold. So if the engine is warm, and/or you put a load on it, it's not terribly happy (although a bubble shouldn't cause that. I'd bet your sensor and/or wiring is bad, giving you a low reading all the time). But for a cold start and idle for 10 seconds or so, no problem.


As I mentioned, I did the first startup on my 22RE with no coolant or accessories. Started up and idled just fine.

TNRabbit

I ran mine for about 30 seconds with no coolant with no issues.

xxxtreme22r

When 92 Toy's did it because of an air bubble, it was on first start after a headgasket change so the engine was cold as cold can be, once that air bubble worked itself out it stopped spitting and sputtering. Been running fine ever since.