Hello all,
I just finished rebuilding my 1987 4runner. It's bored .20 over with keith black pistons, and the RV head from engnbldr. Every thing I touched I cleaned/painted. It's been taking a lot of time! So last weekend We (Me and Dad) put the motor back into the truck and bolted every thing back up. That went fine. Late Sunday went to start it and nothing happened, I expected this. checked the timing with a timing light and it needed to be ajusted alittle bit. Redid that, and still nothing, it just cranks and cranks. on Monday I looked over everything and could smell fuel, lots of it. turns out that the injectors were leaking, every dame one! So I took everything back apart and got fuel everywhere, of course. Replaced the O-rings on the injectors and reinstalled them, hooked everything back up and now there are no more fuel leaks. Went to start this time and I could hear life in the motor! It tried starting, put-put pitter-put then die, then all it did was crank. Wait 30 seconds and I tried starting again with the same result as before! Again, then nothing but cranking. It would repeat itself every 30 seconds. So out of curiosity I went and got some starting fluid and put it on the air filter. This time it ran for a good 10 seconds then it died, tried again only this time with 1/2 throttle, it starts to rev up then it dies a stumbly death. Compression is good, new fuel filter, new plugs. The only thing that I noticed when I was doing the compression test with all of the spark plugs out was that the coil was arching from both sides to the center. When I put all of the plugs back it it stopped arcing. The arcing went down little by little as I put the plugs back in. I have searched the net for hours with many people having the same type of trouble, but with no resolution. I need to fix this. Please helP!

GOI

No posts yet, this must be a real stumper.

Any how I was thinking that I may have some bad fuel since I took it to the powerwash to get all that dirt out of the engine bay. Curious if this could be the culprit or not? I did drain the fuel rail once to put in the new O-rings. was this enough? <img src="/forums/images/graemlins/confused.gif" alt="" />

do you have the intake tube to the MAF hooked up?

That is what I was thinking. Make sure the clamps are tight too and there are no tears or rips in the hose.
Jeff

YES,
I do have the MAF sensor hooked up and pluged in and on tight. I also have the throttle possition sensor hooked up. Also, battery to ground/block attached. Any more suggestions? What about the coil arching or maybe water in the fuel line? Any fuel for thought on these issues?

I really doubt that it is water in the fuel. Unless you back filled the fuel filter. LOL. The arcing on the coil is normal when you don't have a path for ground. The arc is trying to find the easiest path to ground and your coil mount is it.
Jeff

That's what I thought about the coil, just no where for it to go but to the other side. The fuel filter went on the motor before it went in the truck which was after I powerwashed the whole engine bay. Durring the powerwash I forgot to put on some kind of cap over the fuel line durring the wash so I would expect that some water could of made it down the fuel line, but I'm not for sure. Also, I was reading in the big hays manual that if the altinator is hooked up wrong the car won't start? So I know there is one plug to attach the one plug and a prong to attach the wire at, for a second check where does the wire attach to the altinator? I forgot to note it when I took it out, and put it on the most logical prong. I put it on the top of the altinator where there is a prong by the plug in. Is this right? <img src="/forums/images/graemlins/confused.gif" alt="" />

yea that sounds right. Check the wires in the plug. mine broke of inside the connector on the alt. side and it took weeks to find. ended up rewiring the whole thing.

The fuel pump test jumper is easy to try and can help isolate if it is a fuel issue or not...

Thanks for the link, I'll keep it in mind while I try and figure this thing out. Right now I am tring to find someone that has a inline fuel pressure gauge so that I can see If my pump is at least working correctly. So far no luck, and I don't want to buy one for $50.00 either, so I get to play the waiting game. <img src="/forums/images/graemlins/sleeping.gif" alt="" />

On the lighter side of things my Doug Thorley header is supose to get here tomarrow, I am thrilled about that.

Question; haven't tested this yet but was wondering, does any fuel come out of the fuel pressure regulator on it's way back to the fuel tank when the truck is trying to start/or when it's ideling? If so, is it a lot/or a little? I was going to try and pull off that return line from the regulator and see if any fuel comes out, if so I was going to plug that hole so no fuel escapes, then try starting it and see what happens? Good idea/or bad Idea. Maybe the pump is fine but there is not enough pressure in the line to opperate the injectors because the regulator is stuck open.

Just a Thought please advise! <img src="/forums/images/graemlins/kewl.gif" alt="" />