Topic: motor swap now it wont start

[camo89]

ok so i pulled the motor out of a 91 stick and instilled it in a 87 automatic.  timing is spot on. we have spark and fuel at the rail. so in the best of my knowlage it should run. it did sputter when i sprayed starting fluid in it.


i do not have the toqure converter hoked up if that makes a diffrance

 

[jimbo74]

which computer is being used? the 87 will want to see a nuetral start safety switch, that the stick doesnt have.....

[camo89 [OP]]

the computer 4 the automatic truck wich is what the motor is in it turns over so the nutrail safty switch works 

[KDXSR5]

could your dist possibly be 180 degrees off? Or did you not remove the dist when you swapped the engines?

[camo89 [OP]]

timing is on i  pulled the valve couver to make shure valaves where closed with the rotor at 1

[KDXSR5]

Ok I am outta ideas then, lol

[camo89 [OP]]

i am also

it dosent back fire

it turns over nicely no studder

[Tallchevy]

The TPS p/n is different on the 91 engine & that might be the problem.  Put the 87 TPS back on & try it. It's worth a try. Also the injectors look the same put are different p/n's as well but those should work.

[camo89 [OP]]

all i swaped was a long block no eletrical from the 91 is in the 87 i used the orignal intake


only thing swaped block head valve cover oil pan

[I.D.G.A.F]

did you ground the block to the frame?

[camo89 [OP]]

it is grounded from the block to the body in 2 places and from the frame to the block in one with the battery cable

[camo89 [OP]]

so after playing with it more i have fuel to the intake and spark

if i spray starting fluid it will start so that leads me to fuel

dose aney one know if the injectors are suposed to have power all the tiem at bolth wiers

[camo89 [OP]]

its alive sounds sick as a dog but its alive

[KDXSR5]

So... what was it?

[camo89 [OP]]

to be 100% honest i have no idea i went out turned the key and she fired up

its noisey im shure the valves need to be adjusted and what not but it runs 

[BUDDERS]

Let's hope it doesn't have a bent valve.  I built one of my 22re's and  when I went to fire it up, the #4 exhaust valve bent.  I think it was something stuck in the valve guide from the machining process.  Then after I pulled the head, cleaned up the valve guide and replaced the valve, it didn't want to start.  Then I realized that the crank needs to be set at 5 degrees before you line the distributor rotor up to the #1 wire.

[I.D.G.A.F]

There's something in the Hanes manual about crossing(jumping) two terminals somewhere in the engine bay so you can set the timing.  I would try that to get the engine on the same pace as the computer?

[BUDDERS]

There's something in the Hanes manual about crossing(jumping) two terminals somewhere in the engine bay so you can set the timing.  I would try that to get the engine on the same pace as the computer?

Yeah, you have to jump T1 to E1 on the DLC1 electrical connector under the hood.  This will drop the idle down to base idle so you can set the timing on the distributor.