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Starting problem and generally won't run


adman

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Looking to the collective massive for some ideas.

Car broke don't on Tuesday am. Symptoms before cutting out where serveral stutters (for want of a better word) in the ten mins before it actually cut out completely.

AA man checked for a spark (ok), checked the injectors with a test lamp (ok) and said he reckoned fuel pron (spark plug was dry). So he asked me to crank it whilst he gave the fuel tank a whallop and hey presto, it started. We decided he should recover me home as no guarentee how long it would go. Tried starting again when back at mine, whallops to tank to no avail, wouldn't start.

So, fuel pump gone (hence other post of mine about replacements...).

Now though, I'm not so sure. The pump primes up on ignition, and when i took the banjo off the fuel filter and turned the ignition on fuel came out. The fuel filter is only 3 months old so I know it's not that.

However, it still won't start. The plugs now are quite wet when take them out, so fuel must be getting in. I'm still getting a spark. I've tested the ICM and that seems ok. I've tested the resistance on the coil (as per workshop manual) and the Secondary resistance is in spec, the A-B is reading ~1.1ohm as opposed to 0.63-0.77ohm - not sure how important that is. Definite spark on the plugs though. Of course i don't actually know if the spark is happening at the right time, i just know it is happening.

I have tried resetting the ECU by removing the 7.5A fuse. Also had the battery out ovenight on charge (so don't know if that would also reset the ECU.

Have tested the HT leads and they're all fine. Dizzy cap is only 3 months old, so not that.

Injectors are all within spec on resitance reading.

Any idea's on what to do next? I have ordered a new fuel pump, but i'm not sure that's the problem now, unless maybe the pump is working but at the wrong pressure?

Bit of history. Moday night had a very hard drive for 90mins in very wet conditions. Drove it a lot harder/faster than normal, and it broke down the next morning.

Other bit of history (as per another of my posts), Honda told me the head gasket has gone (investigation into cooling problem). I'm not convinced now as whilst doing some of my other investigations from this breakdown i did a compression test (throttle at idle) and got 175 psi on all cylinders. If the head gasket was gone i'd expect one (or more) to be at varience if there was a breach between a cylinder and the cooling jacket. The workshop manual allows a variance of up to 43 psi, mine is nigh on zero variance.

Really stumped on this now, sorry for the really long post, hope you didn't all get bored half way through :lol: . Much easier on my old mini... ;)

Adam.

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Hmmm.. Water in the air filter maybe?

Might sound daft, but worth a quick try, pull the tube off the air box, see if it starts without running it through a filter...

Fuel ok (probably), Injectors seem OK, spark mostly good, air is about the only thing you've not tried!

Do you have any gunk in the rad, or fluffy / creamy stuff in the oil? HG gone I'd expect one of them to be contaminated, either fuel or oil!

Whip the air filter off, worth a 5 minute test I'd say!

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Good shout, thanks. Will give that a go (when cat gets of my lap and lets me get up). Did hit a large puddle on the M50 at about 90 whilst overtaking a lorry with huge spray. Rather scary moment.... :? so may have got water into the air box.

On the head gasket side, oil seems normal (have done an oil change since my cooling problem and no unusual crud in it). Water is clear. So i'm not really sure on what basis honda said the head gasket has gone. Guess i should have asked what they tested, but probably too late now as was a month or so back.

Will report back.

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I 2nd that if the head gasket had gone there is no way you could have driven it hard for 90 mins it would have boiled over for sure . If you have no air filter problems , check the timming on the belt get tdc on the crank pulley and make sure you cam timming marks line up the cambelt could have slipped if it old . Thats about the only other thing i can think of you have checked most other things ,But if it was way out you would have compression issues . Rich.

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So presumably I need to take the head cover off to be able to check the TDC marks ont he crank pulleys. Is the Crack Pully marked for TDC? Can't actually see in the workshop manual. Will get a good torch and have a look. Haven't checked the air filter yet so that's first job.

After this I think it's a tow into a garage...... :o

And then me going from 169 horses into 43 shetland ponies in my 1956 series II morris minor... :roll:

cheers,

adam.

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Yeah mate, the Allignment marks are on the cam pully's but they are hidden by the rocker cover.

10mm socket is all you need though! 12 nuts :D Simple enough!

You can use your wheel brace to turn the crank manually as it's a 19mm bolt :D

It's a damn site easier if you take you spark plugs out too as you are not turning with pressured cylinders!

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As john says take off the rocker cover and the turn the crank . Made sure you manually turn the engine over in the direction it would run , there are 4 marks on the bottom crank pulley you want the last one to the right like this

work1017.jpg

Then see if the cam pulley marks line up like this :

work1012.jpg

If they dont you have a problem , Those pulley are after market but the standard one have marks on to .

for the full engine build thread :

viewtopic.php?f=86&t=5104

Rich.

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Mmmm, ok, had the rocker cover off and the two cam shaft pulley's are aligned. b****r to see down to the crank shaft pulley but not sure it looked like that. There certainly didn't seem to be any notches. Will get out and turn it to TDC then if I can get a socket on the crank shaft. there's a awfule lot going on at that end....

Checked the air filter, no problem there. Only other thing to say is that when i take the plugs out they seem very black and wet, as though oily, but then it could just be petrol and the black carbon, so not sure if that is relevant at all.

Cheers chaps. Rapidly thinking though it's going to be a tow to a garage.

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