Rb25DET won't start. I have fuel/spark/compression

Discuss the RB20, RB25 and RB26 series engines.
droptopsf98
Posts: 45
Joined: Fri Oct 02, 2009 2:22 pm
Car: 1989 240 SX SE pending RB25 swap

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I'm dropping an RB25DET into my 240, but the issues I'm having are basic internal combustion engine principles. What really bothers me is that this thing won't even try to sputter, let alone start.

Fuel:
-I can hear the injectors clicking when I stick a long extension on the injector and listen
-If I pull a spark plug out, I can see fuel shooting out the plug holes
-Gas in tank was a couple years old. I pumped out what I could and put in 5 gallons of fresh gas, to no avail.
-Sprayed ether into the intake to no result from the engine. Backfired back out the throttle body once.

Spark:
-I have confirmed spark to be working by laying the plugs in the coils on the intake. (see video) Plugs in or out, this is what it sounds like when trying to start it.

http://gmtunerbash.dnnmax.com/Videos/20 ... -29_56.3gp

Compression:
175-185 on all cylinders. Fresh rebuild currently so these numbers are a bit high for the moment.

Engine has a fresh timing belt, which I'm almost certain that I did it right, I've timed engines before it's not hard. Let me know if you got ideas, I'll take video of whatever and post it up. I'm at a loss. The way this thing's sitting it should start, or at least sputter.


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S14-NEO
Posts: 1385
Joined: Wed Feb 16, 2005 6:38 am
Car: 1995 nissan 240sx RB25 NEO powered

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well first off the video wouldnt load for whatever reason...from what your saying all of the key parts are there to get this thing to go but it sounds like to me your timing is way off ....youve tested all of your coils and they are confirmed firing then id say timing all the way..if you spray starter fluid in there and still get nothing well somthing has got to be a miss...how long have you been trying to get it runinng...if its been an ongoing thing then you might want to pull your oil dipstick out and see if it smells like fuel...if your not burning it it has got to be going into the oil which isnt good ...too much fuel in the oil aint good yanno..

droptopsf98
Posts: 45
Joined: Fri Oct 02, 2009 2:22 pm
Car: 1989 240 SX SE pending RB25 swap

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Key was broken off in the CAS. Runs great now :)


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