BADSVN2000

Ok here I have another isssue with the on going bunch of issues with my car.
I have put the engine in, everything is bolted up and plugged in to the correct places but it is very difficult to start. I have had it running 3 times now but it takes forever to get it going. Today I spent maybe an hour or so trying to start it, got pissed off and pulled out the plugs and cleaned them then turned the engine over to get all the fuel/oil out. When I put the plugs back in after a clean it started after a few attempts. When trying to start it, it pops and back fires a bit, almost starts and then just cranks over as if no spark. I am finding that I have to lightly depress the acc pedal to get it running when it finally decides to kick into life.
I had it running for about 10-15mins revving it up a bit and checking for leaks etc. It seems to rev ok but the down idle is a little slow and I cant let the revs drop below 1000rpm or it trys to die. The idle is ok (very very loud as only have the 3 inch down pipe attached at the mo so no real exhaust system) no erratic shaking or anything but after I shut the engine down it wouldnt start again.
I know this engine runs as it came out of a running car, compression is good and when it wasstripped down to a shortblock, all of the holes had been covered with alloy tape, sealing the engine.

I have just painted the entire engine bay so my initial thought was to check the earth points so I did, all of the earths that I checked are fine, igniter earth, engine etc. I am running an APEX'i Power FC that came out of my old FD which was running fine when I pulled it out but I am unsure which fuel map it is running as my last FD had constant probs with the boost, or should I say lack of.

Can anyone help me with this problem????

I have another thread about my gearbox which I also need help with if anyone is interested.

Yours frustrated and stumped,

Jon.

orbitcast

check compression!

moconnor

iTrader: (14)

Have you read this:

http://www.rotaryresurrection.com/3r...p_breakin.html

TRWeiss1

iTrader: (20)

How's your coolant level?? Is it right up in the filler neck? The reason I ask is because I'm having Dave at KDR rebuild my motor as we speak, and I had the same exact symptoms as you. Difficulty starting...Rough idle for a while....Need to depress gas slightly while starting...etc. I had a bad coolant seal, and what would happen is when the car was running exhaust gases would pressurize the coolant system beyond the specified 13 psi. So, while the car was running coolant would force its way out the overflow, but then when I would shut the car off coolant would leak into the rotor housing since there was no exhaust gas to prevent it from doing otherwise. The end result was that the plugs got wet with coolant when I'd shut the car off, and it'd give me a tough time starting. It would run rough because some of the plugs wouldn't fire due to being so wet with coolant, but eventually the motor would heat up enough to burn the coolant off and the motor would run normally. I would especially have to stay on the gas at startup, since the plugs were so wet with coolant they didn't want to fire. Anyway, I hope for your sake this is not the case (and it probably isn't since you just built the motor), but I'd say it is a base worth covering. Good luck!

bryant

could be leaking injectors

BADSVN2000

Update

Ok so I have checked the compression and it is all fine, the engine was a low kms 2nd hand jobby fresh from Japan that has also been rebuilt in Japan and came out of a running car but it was just a short block.

I also realized when I had it running the first time that because i didnt have the air pump hooked up that there was a massive airleak from the hoses. When I had it going it wouldnt idle on its own until i put my thumb down the air pump hole so they needed to be blocked off.
I pulled off the manifold again and took the 3 metal hoses off completely (2 to the air pump and one to the cat) and blocked off the holes with some 3mm alloy plate. I then put it all back together and tried to start it and still no joy so I pulled the plugs and they were dirty and wet with fuel so I cleaned them up and put them back in after cranking the engine over to get all the crap out of the housings.
I then started her up and only needed to crank it about 5 times then she ran, idled and sounded good (bloody loud though) and I left it running for about half an hour, checking water temp, fans and oil press etc. I am thinking another reason why it is hard to start is because I only have the front 3 inch down pipe attached with no exhaust, so there is efectivly no back pressure.

Since having it running yesterday I have started it 3 more times and every time it seems to start up and run fine so I think the problem was that all the accessories and engine had been sitting for so long that it just needed to be run for awhile to clear it all out.
I hope my problems as far as the engine goes are solved now I just have to work on the gearbox to get that working....... Wish me luck.

BADSVN2000

Nope i have changed my previous statement, still starting like a pig, might go invest in a decent battery though and bolt the exhaust on! I also have a new igniter pack coming as the one I have came off a car that has been sitting outside uncovered (no bonnet) for like a year!

crazyrx7

If you are running the power fc, just check to make sure the sensors are all reading correctly and are within range. It could be something as simple as the tps sensor (throttle position sensor).

R.K.

Archie

iTrader: (-1)

Yeah, no bonnet (hood?? right?) is no good.

^crazyrx7 I love your color. I think I may have seen you post once before, and meant to ask you what color it was! I was thinking about going "Shinka Copper Red" but, not to copy... love your color.

Apologies for the thread-jack-

BADSVN2000

Cool I will get my hands on a hand controller and check that also. I spoke to a friend of mine and he said to run an earth cable directly to the engine from the battery. The reason for this he said was because I have just painted the engine bay and the earth may not be as good as it should be. Electricity is lazy and will take the easiest route ie. it may start trying to earth through the accelerator cable for example. He said that alot of engine starting problems are a direct result of bad earthing. The things you find out huh, at least im getting there.

Oh well im off to pull out the diff!!

crazyrx7

Thanks. The color is Lamborghini Orange.

R.K.