Toyota 4runner woes

[bajjer9]

I have a serious issue I need some help with

A little background first. I received an 86 runner 2 years ago that had been sitting for a bit and needed a head. Well rather than mess around with an engine I knew nothing about I purchased another with about 140k on it. It ran great for about a week the started knocking. Tore it down and found number 2 rod oil starved on the crank side. So I rebuilt the old block with all new components.

Now the dang thing wont run at all. I have spark. My crank/cam timing is spot one and I get fuel to the injectors. I have drained the tank and replaced fuel with fresh fuel. The motor will run for a few seconds then die and then wont start again for a while. I have worked with hot rods for many years so I know a lot about cars and engines in general but this has got me to the point of converting the 22re to carbs (by the way aside from carb,manifold and maybe distributor any other things I need to consider?). My brother who is a motorcycle mechanic cant seem to get it going either. I love the truck and probably wont get what i have invested in the new motor if I sold it so I really want to get it going. Anyone have any suggestions? I (and my brother agrees) that its going to be something simplistic but damned if we can figure it out...it aint rocket science!!

Thanks ahead of time for any suggestions!

James

[bbagwell]

If you did switch to a carb you would also need a fuel pressure regulator. The EFI fuel pump has too much pressure for a carb.

[85 toy]

is your ignition timing on.

[wrnchplr]

friend of mine had the same issue. found that the plug wires were 1-2-3-4
not 1-3-4-2 it would flood out and not start....check that one first....

[KToy]

lets get back to basics. BTW had similar issue with friends last 2 motors.

we did this. checked fuel pump in tank.
then fuel filter.

then wire order on the plugs.

then timieing.

then injectors were clogged on the efi motor and caused the problem.


on the carb motor it was timing and firering order. then it was a gasket on the carb and it was sucking in air. replaced gasket and worked great.



i would start with fuel pump and filter. then wires and distributor


if all that fails check the MAS mass air flow sensor. its by the air box.



hope this helps. also make sure you have no vacuum leaks those efi trucks use a tone of vacuum to run.

[bajjer9]

well fuel pump is good and injectors work confimed on a bench
Crank to cam timing is spot on

Firing order is in question...I recall setting the firing order as per the numbers on the cap..i suppose the cap may be the same for another engine and perhaps its wrong...gonna verify the order with the service manual

I have tried messing with the maf sensor...going lean as well as going rich..and everywhere in between...correct me if i am wrong but if you remove the air boot from the intake and "trick" the ecu into thinking there is airflow through the box by proping the flap open shouldnt the engine run albeight crappy? even running crappy would be a step up from where i am now

[RockCrushinToy]

did you stab the distributor correctly, i think you can only be 180 out though if you can stab it wrong at all

[bajjer9]

yea the distributor was placed into the engine with the #1 cylinder at TDC and the rotor on the #1 plug wire

[Camotoy]

firing order is 1-3-4-2 and destributer is firing in clockwise as what was stated and have you checked the TPS (trottle position sensor). you say u have spark, timing right or close, and fuel then it should be either the TPS or MAS. get the MAS and disconnect it and tap on the TPS. another thing are the spark plugs new, cause spark plugs can stop working ive had it happen but they were cheep plugs. check these things and set timing 5 degrees BTDC. good luck :grin:

[DeathCougar]

yea the distributor was placed into the engine with the #1 cylinder at TDC and the rotor on the #1 plug wire

it has to be at TDC on the compression stroke....it is possible to set it at #1 at tdc on the wrong stroke. double check that. Should be on TDC with the timing mark on the cam gear pointing straight up, matching the mark on the rocker assembly.

[Oatmeal]

Sounds like a fuel delivery problem. Read through this: http://www.4crawler.com/4x4/CheapTricks/index.shtml#FuelPump and try a jumper wire at the fuel pump test plug. If it stays running, at least you'll know which direction to head. Hope that helps, good luck and post up when you figure it out--------Hans

[D-Krawler]

if your 80 amp fuse is blown(this is the big black on in the fuse box under the hood) then your injector pule will be all messed up, when my 80amp fuse blew it would start for a xec then die or i could keep it running with starting fluid haha it's woth a try to just check it real quick

[ZUK]

...............The motor will run for a few seconds then die and then wont start again for a while. ............
James

That sounds like a fuel delivery issue. I bet it will keep running if you introduce the gasoline with a "turkey baster" at the butterfly input. That would confirm it's fuel.
Double check the electrical connector on the AFM for anything unusual....especially the 2 contacts responsible for energizing the FP.

[ZUK]

Old gasoline will clog a FF in about a week.....it's not that simple is it?

[noride]

Did you figure the problem out?