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| GrannyFalcon82 |
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Vehicle : 1988 Ford Falcon EA Spac
Engine : 3.9L I6 Multi Point Injection Gearbox : 5 spd Manual G'day guys, here again with the misfire i've been chasing for about four months now, the car is un-drivable as of now. Power surges, the engine misfires and backfires, the ignition timing is retarding itself when applying throttle ( WTF? ) The engine seems to idle faster when the ignition timing is advanced by about 15 degrees, but then it misfires like a b**ch and still power surges ect... There was a concerning scraping sound as of now coming from the back top end of the engine when applying throttle, almost a thin metal kind of scratching sound. Things that have been changed : Spark plugs Fuel filter Leads Coil x3 Distributor x3 Inlet gasket Brake booster ( Had a vacuum leak ) Map sensor 02 Sensor Injectors Fuel rail The car has been taken to a mechanic ( Pride now lost... lol ) They couldn't identify the issue. I'm not usually a " Throw parts at it guy " But this has absolutely boggled my mind, and the fathers 30+ years of engine reconditioning experience, I'm not scrapping this car, i will keep soldiering on no matter the cost ( Keep that in mind, Holden fellas ) As for now, the car remains in sick bay until i find a cure.
_________________ Rolling around with a Barra 182 - equipped 1988 EA falcon |
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| 89.SVO |
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Age: 35 Posts: 3382 Joined: 11th Mar 2008 Ride: EA SVO, AU2, Toyota Crown Location: Bendigo |
have you had a look at cam timing? or made sure you haven't taken a lobe of the cam
_________________ Daily driver: 2010 Toyota Crown hybrid 3.5L V6 hybrid. 254kw. |
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| Lukeee |
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Aux shaft?
_________________ Weekender: 07 BFII XR6T - Conquer |
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| TROYMAN |
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Lukeee wrote: Aux shaft? +1.. had the same thing a few years back, changed everything possible to find the au shaft was chewing out... all from fitting cheap a** aftermarket dizzy,,, |
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| GrannyFalcon82 |
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TROYMAN wrote: Lukeee wrote: Aux shaft? +1.. had the same thing a few years back, changed everything possible to find the au shaft was chewing out... all from fitting cheap a** aftermarket dizzy,,, Mate i think this could be the problem, after reviving the car from the grave i thought it'd be acceptable to chuck in a cheap $50 ebay dizzy, until not only then did i do my darn research on these shafts, i've changed over the gear not long ago, chances are the motor is screwed isn't it? ( Metal shavings circulating the entire engine ) ? My main concern, if this is a fixable problem, how can i go about removing an aux shaft, and can i grab one from an ED falcon and chuck it into an EA?
_________________ Rolling around with a Barra 182 - equipped 1988 EA falcon |
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| TROYMAN |
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GrannyFalcon82 wrote: TROYMAN wrote: Lukeee wrote: Aux shaft? +1.. had the same thing a few years back, changed everything possible to find the au shaft was chewing out... all from fitting cheap a** aftermarket dizzy,,, Mate i think this could be the problem, after reviving the car from the grave i thought it'd be acceptable to chuck in a cheap $50 ebay dizzy, until not only then did i do my darn research on these shafts, i've changed over the gear not long ago, chances are the motor is screwed isn't it? ( Metal shavings circulating the entire engine ) ? My main concern, if this is a fixable problem, how can i go about removing an aux shaft, and can i grab one from an ED falcon and chuck it into an EA? there is a chance metal is through the engine but doesn't mean its stuffed, I just replaced my engine when it happened.. to change the aux shaft the timing case cover needs to be removed, timing chain off ect... you can use a aux shaft from ea to au, they are all the same... |
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| Lukeee |
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Only reason Im guessing this is the problem is becsuss it happened to mine recently, mechanic threw in an aftermarket dizzy when the motor was rebuilt and it stripped the aux shaft.
Every time the timing was reset it'd start and you'd rev it then itd die in the a** straight away throwing the timing way out. Its a pain in the a** because you're probably better off replacing the whole motor now unless you want to stuff around pulling it apart and cleaning everything.
_________________ Weekender: 07 BFII XR6T - Conquer |
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| Pakrat |
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You can look at the aux shaft down the dizzy hole, have you checked for broken guides? My car broke tensioner side guide and would miss and surge
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| GrannyFalcon82 |
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I'm currently taking off all the crap at the front of the engine, gonna take the timing cover off and have a look, i've had a look at the tensioner and everything else up the top end cam timing seems spot on, lobes and rollers aren't damaged, everything seems to be alright, though my luck once again has run out
 Darn bottom alternator bolt seems to be twisting rather than breaking loose, i can see the other end as i'm twisting the head and it's not moving, progress slowing down, lmao.Time for a beer i'd say 
_________________ Rolling around with a Barra 182 - equipped 1988 EA falcon |
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| GrannyFalcon82 |
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Would anyone happen to know the size bolt used for the harmonic balancer holes, have a tool here but i'm missing the darn bolts, i know there's 3 smaller holes and then there's 9 bigger holes, just need to know the thread pitch, diameter ect
_________________ Rolling around with a Barra 182 - equipped 1988 EA falcon |
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| TROYMAN |
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the 3 holes are m10 metric. cant remember the pitch though..
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| GrannyFalcon82 |
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where and how many bolts are around the timing cover, also does the water pump need to come off? (Never taken a timing cover off)
_________________ Rolling around with a Barra 182 - equipped 1988 EA falcon |
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| Pakrat |
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Waterpump stays on.
Needs p/s pump and brackets off, alt and brackets off, belt tensioner off and then there it's like 6 or so bolts from the front AND there is a few up through the front of the sump into the case. You will have to lower the sump right down before you try to pull the case off or you will drop the lower chain guide into the sump and may be a right b**ch to get out. Also you can't get the case back on without having the sump dropped. Remember to put sealant on the sump, case and especially a lot on the top part of the case or it WILL leak oil. |
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| GrannyFalcon82 |
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This is one side of the idler shaft gear, pretty darn mangled!
_________________ Rolling around with a Barra 182 - equipped 1988 EA falcon |
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| GrannyFalcon82 |
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One more image, just from a different side of the gear.
If you don't have the experience you'd think by looking at the distributor gear, that the idler shaft gear would be fine! That is until you bite the bullet and take it out.
_________________ Rolling around with a Barra 182 - equipped 1988 EA falcon |
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