NO START 302 HO SWAP

[n2ogoblin]

Hello everybody I'm new to this site but have always found u guys very helpfull.. I have an 88 cougar 302motor I have converted 2 a ho in my 93 coupe and it will not start.I have new 42# injectors new 80mm mass air meter I know overkill:eek: new ported cobra intake E303 cam ported e7 heads msd distributor and digital 6 ignition with hvc coil 190 walbro pump and the timing is dead on with an a9p computer also has 105#s of cylinder preasure on avg between all cyl's not real high but it should start. it'll turn over all day and not start every now and again it will try to hit.Please help me spitball around some ideas i have done this engine swap a few times and never had one that would not fire up and run.:mad::confused::screwy:bout to drive me:drunk:

[Foxxx5oh]

try an do a 180 with the timing?check your fuel and spark

[n2ogoblin]

DID THAT GOT FUEL GOT FIRE AND DONE CHECKED DISTRIBUTOR A FEW TIMES. IS IT POSSIBLE I PUT THE CAM IN 180 OUT? GEARS WERE DOT TO DOT LIKE MANUAL SAYS.REALLY DONT THINK YOU CAN DO THAT.

[mrstang-gt-46]

firing order is different in ho

[n2ogoblin]

AS LONG AS YOU PUT A CAM FROM AN HO IN IT LIKE THE E303 CAM IT CORRECTS THE FIRING ORDER. AT LEAST THE OTHER 3 I DID THIS ON IT WORKED.. http://www.coolcats.net/tech/advanced/ho_conversion.html

[Foxxx5oh]

maybe you are running the non HO firing order?

[n2ogoblin]

NOPE 1-3-7-2-6-5-4-8 COUNTERCLOCKWISE. THERE IS GOT TO BE SOMETHING SMALL I AM MISSING BUT I'LL BE DAMND IF I CAN FIGURE IT OUT.

[1992MustangDW]

Check and make sure the orange wire on the injector harness is grounded if not they will just stay wide open.

[n2ogoblin]

Yep grounded to right head.Thanks

[stang5slow]

ignition control modual?

[n2ogoblin]

Took it and got it tested last week. New msd distributor getting fire got another computer ordered and gunna try that.

[stang5slow]

ok, maybe the obvious? starter? plugs gapped right? i belive there between .52 and .59? fuel pump have a cut off switch? check that? unless you have the valve to check that by the injectors?

[n2ogoblin]

getting the right fuel preasure and sprays just fine starter spins motor over just fine plugs are on 54 the injector harness is off a 90 model but main harness is a 92-93 harness i heard the only difference in harness is how it hooks up in car could the injectors be firing out of order.

[stang5slow]

hmmm, i'd be checking injectors over again

[facemelter71]

Maf harness from 89-90 is the same.
Maf harness from 91 is unique in that year.
Maf harness from 92-93 is the same but different than 89-90 but very similar to 91.

Took this from the Corral.

[n2ogoblin]

Back to square one computer is good harness is right injectors are firing right and still no crank up. getting the correct input and output from everything.

[stang5slow]

:bangwall: :doh: :drunk:

[facemelter71]

Check all vacuum hoses.How and did you check spark.

[n2ogoblin]

Whats up with vacuume lines I think they are all right aint got but a few 1 to the egr valve fuel regulator and brake booster from tree to intake.Took plug out grounded to block nn turned it over then again with a spark tester and gapped all the way out to 70 and the msd jumped it whitish blue spark. Was just messing around and if u hold the throttle wide open the enginne will spin faster and hit some act like its trying to catch but not fire up and runn sounds so close tho could that meen anything.Engine is fireing just not cranking up and running??????????????

[facemelter71]

Sounds to me like a timing issue.The dots were lined up on the crank and cam gears,but what about the distributor.Also make sure the cam gear didnt take a poopie.
You have Fuel air and spark,now you just need it to add the air fuel and spark at the right time.
What about the cam gear,is it adjustable for advancing and retarding the cam? Maybe you put it in the wrong spot.But then the car would act funny but still run.Sounds like the timing is off.Try using some one else's distributor.

[n2ogoblin]

tried it with my stock distributor. it was a regular double roller chain

[facemelter71]

Has the MAF and computer been tuned for 42# injectors?

Im stumped,almost to the point of coming over and lookin at it.

[n2ogoblin]

Mass air meter is for 24#s and computer is stock. Ran same set up on my 92 until I got my pms computer and droped in the dss engine it ran fat but it ran.Appreciate the help but be kinda hard to come by my job transferd me to Lowsyana. This car is a budget build for my girlfriend and is kicking my butt.

[n2ogoblin]

IT'S ALIVE DAM I AM GOOD THANKS TO EVERY BODY FOR THE INPUT!!!!!!!

[blk93notch]

so what did it end up being?

[n2ogoblin]

The msd distributor was losing signal due to a bad ground on this cheap ass timing cover i got from pioneer moved battery ground and this bioch fired right up.It was missfireing bad sounds stupid but that was it put old distributor back in moved ground it runs put msd back in and got to do some fine tuning.

[stang5slow]

thats good, glad to hear you gat her running