Fordmods Logo

No idle 

 

Page 1 of 1 [ 10 posts ] 

 
 Post subject: No idle
Posted: Fri Jul 20, 2007 12:00 am 
Tyre Shredder
Offline

Age: 31

Posts: 347

Joined: 10th Jan 2005

Ride: 2002 Mustang Cobra

Location: Broadmeadows (Melb. North)
VIC, Australia

Ok guys, summary from previous post... I got an R4 cam (with shims, springs, vernier) got it put in by a workshop recommended by RPD and it working all good and well. Last week, my lifters starting giving off the loud tapping noise so I took it to a mate to have a peek. Turned out Intake rocker arm #1 was loose and damaged the shim and the HLA.

He took out the HLA and replaced it with a newer one but didn't shim it.. which didn't really occur to me until later. The car ran REALLY bad after putting everything back together. Car doesn't idle below 2000rpm, the engine shakes, rattles and rocks REALLY violently.. it's loud as f**k etc etc. I drove it home, realised he didn't shim the HLA after replacing it. So I bought a few shims today, shimmed it up (it took 5 1.9mm shims!!) and tried starting it again. Same problem...

I remember that the rocker arm didn't move at all after I shimmed it with 5 shims.. as in there is ZERO clearance from HLA to the spring... would this cause the engine to run so badly?.. just one HLA/spring on the intake side with no clearance? What clearance should there be?

I'm very sure I didn't bump or move the vernier gear. But is there anything else that could cause this problem? Please give me as much info as you can on this, so I know what to suggest to the mechanic once I get one to have a look.

Thanks heaps guys!

 

_________________

Red 2002 Mustang Cobra

Top
 Profile  
 
 
Posted: Fri Jul 20, 2007 1:10 pm 
Tyre Shredder
Offline

Age: 31

Posts: 347

Joined: 10th Jan 2005

Ride: 2002 Mustang Cobra

Location: Broadmeadows (Melb. North)
VIC, Australia

Bump... anyone?

 

_________________

Red 2002 Mustang Cobra

Top
 Profile  
 
 
Posted: Fri Jul 20, 2007 2:05 pm 
Getting Side Ways
Offline

Age: 38

Posts: 1319

Joined: 5th Nov 2004

Ride: 66 Coupe

Location: Perth
WA, Australia

its probably the map sensor hose, its quite common for it to split, or come off.

5 shims is way too much, you only need 1 original + 1 more.
Top
 Profile  
 
 
Posted: Fri Jul 20, 2007 3:10 pm 
Tyre Shredder
Offline

Age: 31

Posts: 347

Joined: 10th Jan 2005

Ride: 2002 Mustang Cobra

Location: Broadmeadows (Melb. North)
VIC, Australia

The gap was pretty big with even 3 shims! What I did was add a shim, tighten it up, have a look. The gap was big, so I added another one until I got to 5. Now theres no clearance on that HLA-spring. Can zero clearance on one HLA-spring cause the problem?

The MAP sensor hose plugs into the bottom of the MAP sensor yeh? If it's that, it hasn't come off.. could be a split.. It was all fine (except tapping lifters) until the rocker cover came off and my mate changed the HLA without shimming it... but I'll note down the MAP sensor hose. Thanks for that!

Any other suggestions?

 

_________________

Red 2002 Mustang Cobra

Top
 Profile  
 
 
Posted: Sat Jul 21, 2007 9:20 am 
Getting Side Ways
Offline

Age: 38

Posts: 1319

Joined: 5th Nov 2004

Ride: 66 Coupe

Location: Perth
WA, Australia

can you explain what gap and what 'hla spring' you are referring to? are you sure the lifters not broken, or 1/2 of it is missing?
Top
 Profile  
 
 
Posted: Sat Jul 21, 2007 4:13 pm 
Getting Side Ways
Offline

Age: 55

Posts: 434

Joined: 8th Nov 2004

Gallery: 13 images

Ride: 94 Futura

Location: Bilpin
NSW, Australia

Maybe the lifter had no oil so it had free play in it and thats why you fitted so many spacers as my R4 cam only needed 2 and Jasen fitted mine.

My ISC on the throttle body then idle when up like the throttle cable was stuck so when it warmed up I disconnected the lead so it wouldn't rev for no reason but the down side was wouldn't idle when cold.

 

_________________

In Henry I Trust

Top
 Profile  
 
 
Posted: Sat Jul 21, 2007 6:41 pm 
Stock as a Rock
Offline
User avatar

Age: 29

Posts: 181

Joined: 10th Apr 2006

Gallery: 1 images

Ride: XR6 Turbo, EF 5.0L V8 Turbo

Location: melbourne
VIC, Australia

doesn't have a bent valve???

 

_________________

EF V8T 11.54 @118mph

Top
 Profile  
 
 
Posted: Sat Jul 21, 2007 9:26 pm 
Tyre Shredder
Offline

Age: 31

Posts: 347

Joined: 10th Jan 2005

Ride: 2002 Mustang Cobra

Location: Broadmeadows (Melb. North)
VIC, Australia

The Gap i was referring to is the gap between the HLA and the spring... the HLA being the hydraulic lifter.

dasmq.. that could explain it as the lifter was a new one. I didn't have any idle troubles after I got my ChipTorque so yeh, the ISC was fine.

xhxrsix, I'm hoping it doesn't! Any telltale signs? (besides obviously the problems I'm having... which I hope are just an incorrectly shimmed lifter)

 

_________________

Red 2002 Mustang Cobra

Top
 Profile  
 
 
Posted: Sun Jul 22, 2007 2:23 pm 
Getting Side Ways
Offline

Age: 38

Posts: 1319

Joined: 5th Nov 2004

Ride: 66 Coupe

Location: Perth
WA, Australia

The gap between the HLA and the spring, are you talking about the valve spring there?
The tip of the valve should be about 1/4" above the valve spring retainer, like all the other valves in the motor?
Maybe you could take a photo to elimnate the guess work.

If you have the rocker gear off, give the top of each valve a hit with a hammer, not too hard but hard enough to move them off the seats, If you find one or two dont 'sound' the same as the rest, then they might be sticky or bent. all the valve tips should roughly be the same height along the length of the head too.
Top
 Profile  
 
 
Posted: Sun Jul 22, 2007 6:25 pm 
Getting Side Ways
Offline
User avatar

Age: 29

Posts: 1132

Joined: 11th Jun 2006

Gallery: 1 images

Ride: ef fairmont,

Location: brisbane
QLD, Australia

do a compression test to see if it has a bent,damaged valve, thats way to many shims and also isc could have s**t itself with the cam

 

_________________

95 ef montfor sale pm for info, 88 hilux mud truck

Top
 Profile  
 
Display posts from previous:
Sort by  
 Page 1 of 1  [ 10 posts ] 

Who is online

Users browsing this forum: No registered users and 27 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

 

 

It is currently Mon Dec 11, 2017 1:45 pm All times are UTC + 11 hours

 

 

(c)2014 Total Web Solutions Australia - Australian Web Hosting and Domain Names