1990 Integra LS
LS Intake manifold
When pulling the B18A the Oil Pressure sensor wire came out of the connector and i have not hooked that up yet. I have also not wired the Thermosensor. I don’t think either of those would prevent starting, but is that a possibility?
I am geting Fuel, spark, and obviously air. The car cranks like a champ but doesn’t start. I’m pretty sure timing is on point, but the chance i’m wrong is always viable. I have all three grounds hooked up.
I’m really posting to see if anyone knows of any small things that may have been overlooked during the swap that could prevent the engine to start and run.
what year did you pull that b20b from?? is it obd1 obd2?? what about your car?
if all the same then i would plug in the sensors back in. make sure your distributor cap is in proper firing order. if that checks out, make sure you have fuel in the car, check your belt make sure its not tooo tight, b/c that happened to me, the belt needs to have just a bit of slack since the head is made of aluminum.
Check your timing belt for sure, don’t want any damage. Yeah check to see your OBD’s stuff. And the thermosistor won’t prevent it from starting but I don’t know about the oil pressure sensor if that would or not.
What do you mean right OBD stuff? I’m using the stock LS intake manifold, so I don’t need to worry about that stuff. The only difference is the thermosensor is located in different locations and uses different plugs, so there is a wire up that need to be made. It shouldn’t keep the car from starting, though…just the fan from coming on at a certain temperature.
then you have good compression. then theres nothing to see with compression. check your ignition coil, see if it still works.(its inside of the distributor cap)
make sure your spark plug wires still have continuity(ohms check w/ a digital multimeter)
i would also want to check to make sure your True Top Dead Center(TTDC) is correct. that is when you pull the pulley off, its on the block, you’ll see an arrow, make sure thats correct. make sure you have the right firing order too!
When u put in the ls distributor make sure u didnt put it in the keyway 180 degrees off.The mark on the §§§§§ and the one on the cam should line up.Yea and make sure cam timing is correct as well.Bent valves are not good!Thats about all it could be if you have fuel and spark.Double check all your wiring connections for good measure.
Oh yea and like issac stated before double and triple check the firing order on the distributor.When I did my b20 swap that was the one thing that I had wrong.I had the haynes manual, but the illustration is awful so all the wires were in the wrong order.
i just COMPLETELY finished my brand new b20b swap today… and yes i know for a fact that the distributor cannot be put in 180 degrees off, cuz i tried just in case to see if it would at least mount up flush against the head. and it wouldn’t, it would only get 1 side in but not the other.